He____know the answer, but I’m not sure.
A:maybe B:may be C:may D:must
My sister____Beijing tomorrow. She works there.
A:leaves B: is leaving for C:leaves for D: is leaving
-My mother is ill in hospital.
——_______.
A:That’s OK B: All right C:Thank you D:I’m sorry to hear that.
We can use QQ to talk with each other online.
--Good! Will you please show me ______it?
A:what to use B:how to use C:when to use D:where to use
My mother often spends 2 hours ______ housework every day.
| A．do | B．does | C．doing | D．to do |