—I think trees ____________ twice a week in such hot weather.—Yes, I agree. Or they may die without water.
#36181
A
must water.
B
are watered.
C
must be planted.
D
must be watered.
推荐题目
---How well do you know the Opera House?--- I know the place very well. I Sydney many times.
#36766
A
have been in
B
have been to
C
have gone to
D
have arrived in
Mr. Green ___ to the manager now. You’d better call him later.
#41952
A
talk
B
talked
C
is talking
D
was talking
John ________ to Japan on business. He’ll be back ________ a few days.
#39675
A
goes; in
B
went; after
C
has gone; in
D
go; after
Thousands of people______ after the powerful earthquake happened in Wenchuan on May 12th.
#41551
A
die
B
dead
C
were saved
D
are saving