—________do you communicate with your friends far away？
—By sending e-mails．
A．How
B．What
C．Why
D．When
It’s a lovely day．What about________for a picnic？
A．to go
B．going
C．go
D．goes
In school，we often learn English by working________a group．
A．and
B．on
C．with
D．in
The students raise money for their school trip________newspapers．
A．selling
B．on selling
C．by selling
D．to sell
改为同义句
My son is too young to join the army．
My son isn’t________ ________to join the army．
You won’t feel happy at school________you get on well with your classmates．
A．though
B．when
C．unless
D．because
