Being a teacher always encouraging students to think for themselves, I won't tell them answers until they __________ on a math problem for more than an hour.
#101395
A
have worked
B
will have worked
C
will have been working
D
had worked
推荐题目
----Why didn’t you see me wave to you then ? ----Oh, If so. I must say sorry. I think I____ in the other direction.
#102102
A
looked
B
was looking
C
have looked
D
am looking
He _____ football regularly for many years when he was young.
#101712
A
played
B
was playing
C
has played
D
had played
When the old man_____to walk back to his house，the sun____itself behind the mountain．
#103518
A
was starting；hid
B
had started；had already hidden
C
had started；was hiding
D
started；had already hidden
The mother as well as her two children ________shopping in the supermarket near their house every week.
#102580
A
is going
B
go
C
goes
D
are going
—When did you come back?—An hour ago. You the computer games.
#103109
A
have played
B
were playing
C
played
D
had played