Present Perfect Tense: แบบฝึกหัด

Oh no! I __________ my favorite pencil. Can I borrow yours?

Choose the correct verb form to complete the sentence:

Sarah _______ her favorite book all afternoon, and she is still reading it now.

__________ both your teacher and your classmates __________ the new 'National Security' exhibition in the school hall yet?

David __________ the piano since he was five years old.

To follow the new reading goal, everyone in the primary levels __________ a list of ten interesting books to read since the start of the semester.

Read the following short dialogue and fill in the blank with the correct form of the verb in brackets using the Present Perfect Tense:

Teacher: Mary, why are you so quiet today?
Mary: I am a bit tired because I ________ (do) my homework already and studied for the test.

Read the situation: Ben moved to Hong Kong in 2020. He still lives there today.
Rewrite this information into one sentence using the Present Perfect Tense and the word 'since'.

Compare the following two statements:
1. I lost my umbrella.
2. I have lost my umbrella.
Explain the difference in meaning between them regarding the present result. Which sentence should you use if it is raining now and you still cannot find your umbrella?