---What ______ the forest of Yangzhou in the last 30 years?---Yangzhou has become much greener.
#39620
A
has happened to
B
was happened to
C
has happened at
D
is happening
推荐题目
It’s four o’clock in the afternoon. The boys __ in the pool.
#41532
A
is swiming
B
are swiming
C
are swimming
D
is swimming
You shouldn’t ________ here . The baby _____.
#41887
A
play; sleeping
B
to play; is sleeping
C
plays; sleeps
D
play ; is sleeping