They________to Tibet many times．
A．are
B．were
C．have been
D．had been
Most of the young people can hardly speak any Chinese，________？
A．can he
B．can’t he
C．can they
D．can’t they
He likes watching the children________football．
A．play
B．to play
C．playing
D．plays
—Have you watered the plants________？
—Yes，I have．
A．already
B．yet
C．never
D．ever
—How long has he________the books？
—For about one week．
A．bought
B．borrowed
C．lent
D．kept
（2012黑龙江绥化）—Can you give me some information about vacation trips？
—Why not________going to Hainan Island？
A．consider
B．mind
C．keep
