-This problem is very difficult. -I know,but Jack has working it out.
#38799
A
succeed in
B
succeeds in
C
succeeding in
D
succeeded in
推荐题目
He _____in Xinxiang for five years when I heard his news.
#42297
A
has lived
B
had lived
C
is living
D
has been lived
—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.
Mr. Wu___this math problem____him many times, but he still doesn’t understand it.
#38768
A
explains ; to
B
has explained ; for
C
has explained ; to
D
explained ; with
—Have you seen Mr. Smith?—Yes. Look, he _________with a parent in the office.
#39263
A
talks
B
talked
C
is talking
D
has talked