—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
Last year, another two beautiful bridges ___________ over the Jialing River.
#39523
A
built
B
are built
C
were built
D
will be built
—Mike , you look so excited.—Yeah! There          a tennis game played by Li Na this evening.
#38953
A
will have
B
is going to be
C
is going to have
D
are going to be
 China        a lot in the       ten years.
#38575
A
changed, past
B
was changed, first
C
has changed, last
D
has changed, next