—Does it make any when to start?
—Yes, It matters a great deal.
| A．money | B．sense | C．difference | D．progress |
______ scientists know where a storm will happen, winds will suddenly change, carrying the storm to a new direction.
| A．Even if | B．Since | C．Despite | D．Unless |
He has been caught _________ the rain and is wet _________ the skin.
| A．by; to | B．in; to | C．in; through | D．with; in |
It was Asimov was eleven years old his talent for writing became obvious.
| A．that, when | B．When, which | C．when, when | D．when, that |
Is this the reason _____ at the meeting for his carelessness in his work?
| A．he explained | B．what he explained |
| C．how he explained | D．why he explained |
All these gifts must be mailed immediately__________ in time for Christmas.
| A．in order to have received | B．in order to receive |
| C．so as to be received | D．so as to be receiving |