Luckily, the poor boy had enough money _____ he could buy a train ticket.
| A．by which | B．on which | C．with which | D．for which |
______ you may have, you should gather your courage to face the challenge.
| A．However a serious problem | B．What a serious problem |
| C．However serious a problem | D．What serious a problem |
He kept smiling secretly and we were all wondering_______that made him so happy．
| A．how it did | B．what he did | C．how it was | D．what it was |
People who don’t smoke have less _____ of suffering from lung cancer than those who do.
| A．coincidence | B．load | C．aspect | D．potential |
Sitting at the back of the room but in front of some old men and women ______ a very shy girl with two bright eyes.
| A．was | B．were | C．are | D．being |
--- We are going to hold a sports meeting tomorrow.
-- ______ it rains?
| A．How about | B．What if | C．If only | D．Even if |