Present Perfect vs. Past Simple

1.      I don’t believe it! Somebody (a)   (eat) my chocolates! They’ve nearly all gone!

2.      The children (a)   (watch) videos all morning. Their eyes are red now.

3.      She (a)   (read) that book since 7A.M.

4.      He (a)   (write) a novel about time travel. I saw it in the bookshop.

5.      Yesterday, my brother (a)   (give) me two tickets to the concert.

6.      They (a)   (live) in London since 2004.

7.      We (a)   (not/get) home until very late last night.

8.      She (a)   (finish) her morning jog just now. That’s why she looks quite sweaty.

9.      (a)   (she/play) tennis when she was young?

10.  They (a)   (wait) for hours. If the boss doesn’t arrive soon, they will leave.