—Do you know ____________she came to Beijing? —Yes. She came by plane.
- ________does Mary usually go to the M usic Club? -Once a week.
—______? —He is very friendly and generous.
We hope _______ members of the Red Cross.
This maths problem seems _____ for us to solve.
—Would you like to walk along Yueya Lake with me tomorrow afternoon?—Certainly, ______ I am too busy.