Present tenses：练习题

Choose the correct verb form to complete the sentence:
"Yesterday, my brother ____ a high score in his favorite video game."

Choose the most appropriate verb forms to complete the following sentence:

Since the new science laboratory (i) _________ three months ago, the students (ii) _________ more interested in conducting experiments than ever before.

Complete the following sentence with the most appropriate verb forms to maintain correct tense sequence:

"By the time the new environmental policy ______ into effect next year, scientists estimate that the local temperature ______ by \(0.5^{\circ}\)C, a change that ______ directly from current carbon levels."

Choose the correct verb form to complete the sentence:
"I hope that medical researchers ____ a permanent cure for the common cold in the near future."

Select the most appropriate verb forms to complete the following sentence, correctly demonstrating the temporal relationship between the actions:

By the time the final report deadline (1) _______ (arrive) next Friday, we (2) _______ (work) on this project for nearly three weeks, but we still (3) _______ (not finish) compiling the sources.

Complete the following sentence by providing the correct simple past tense form of the verb in parentheses.

My mother ________ (go) to the supermarket an hour ago.

Rewrite the sentence 'I eat an apple' by adding appropriate time markers for both the Simple Past and the Simple Future tenses.

Explain the nuanced temporal and aspectual distinctions between the bolded verbs in the following two scenarios concerning a long-term project:

Scenario 1: A student says, 'I worked on this project for three months' vs. 'I have been working on this project for three months.'

Scenario 2: The same student states, 'By next week, I will have finished it' vs. 'By next week, I am finishing it.'

Based on the following activity log for a student named Mark, fill in the blanks with the most appropriate verb forms:

- General Habit: Mark usually (walk) to school at \( 7:30 \) AM.
- Exception Today: Today, he (take) the bus because it is raining.
- Past Event: Earlier this morning, he (feel) very tired.
- Daily Routine: He always (get) his bag ready the night before.

Identify and correct the four underlined tense errors in the diary entry below. Then, provide a brief explanation of why the Past Continuous was necessary for the second correction.

'Yesterday, I go to the park with my friends. While I play football, I found a lost wallet on the grass. The owner is very happy when I returned it. Next week, I visit the park again to meet my friends for a picnic.'