—Hello, may I speak to Mr Green, please? —Sorry. He          a meeting. Can you call him later?
#41539
A
has
B
is having
C
will have
D
had
推荐题目
---How often ___________ the Olympics _____________? ---Every four years. 
#42174
A
is, taken place
B
is, hold
C
does, hold
D
does, take place
This kind of iPad ______ in our computer shop. It ______ very well.
#36209
A
is sold; sells
B
sells; is sold
C
sells; sells
D
is sold; is sold
The volunteers __ a lot of help to the community for nearly ten years.
#41617
A
offered
B
will offer
C
are offering
D
have offered