Can you imagine what difficulty he had ____ the work?
#89953
A
to do
B
do
C
doing
D
done
推荐题目
______ at the crossing and you will see a tall white building.
#96000
A
Turn right
B
Turning right
C
Turned right
D
Being turn right
The children are seldom encouraged ________up late at night preparing their lessons,if ________.
#98480
A
staying;once
B
to stay;ever
C
staying;sometimes
D
to stay;never
Most of the guests ______to his wedding are his close friends.
#92114
A
being invited
B
invited
C
inviting
D
had been invited
Our school, _____ in 1943, will celebrate its 70th anniversary this year.
#90900
A
founded
B
founding
C
to be founded
D
was founded
While watching television,____. 
#92243
A
the doorbell rang
B
the doorbell rings
C
we heard the doorbell ring
D
we heard the doorbell rings