The boys followed the marks that they ________, until finally they found their way back to the campsite.
#100125
A
left
B
have left
C
had left
D
have been left
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She spent a happy afternoon her coins and stamps she had collected those years.
#101409
A
to look for
B
worked on
C
sorting out
D
watch over
—Why do you look so worried? —My Macbook Pro broke down and my paper _____unfinished since.
#101868
A
was left
B
has left
C
left
D
has been left
---Guess what? We’ve got our visas for a short-term visit to the UK this summer.---How nice! You ____ a different culture then.
#102086
A
experience
B
are experiencing
C
will be experiencing
D
have been experiencing
--- Excuse me, sir. Would you do me a favor? --- Of course. What is it? --- I _____ if you could tell me how to fill out this form.
#103653
A
had wondered
B
was wondering
C
would wonder
D
did wonder