The football match will be put off if it _________.
| A．will rain | B．rains | C．rained | D．is raining |
He often helps his teachers and classmates, and is good at almost all his subjects. __________，he is worthy of the honour of Top Students.
| A．What's more | B．To our surprise |
| C．However | D．In general |
He heard a loud noise, and it sounded __________ a train had been going under his house.
| A．even if | B．as if |
| C．if only | D．only if |
—It's late. I have got to leave now. —OK. __________
| A．Thank you | B．Don't worry |
| C．I'm sorry for it | D．Take care |
We should think carefully about _____ Mr Needham said at the meeting.
| A．that | B．what |
| C．which | D．how |
These events are _____ to each other.
| A．made | B．connected |
| C．linked | D．associated |