---Mum, it’s late. Why are you still here?---Dad hasn’t come back yet. I _____ for him.
#36684
A
am waiting
B
have waited
C
was waiting
D
waited
推荐题目
Don’t make a noise! They _______on a physics problem now.
#41516
A
will work
B
are working
C
worked
D
have worked
By the time I got home, Gina and her sister ______ their project already.
#40028
A
finished
B
have finished
C
had finished
D
will finish
Listen! The teachers ________ a discussion in the meeting room at the moment.
#37210
A
had
B
have
C
have had
D
are having
一Have you mended your bike，Bob?一Yes，I______it twenty minutes ago.
#36854
A
have mended
B
mend
C
had mended
D
mended