Nowadays, most people，in order to keep fit，prefer walking to driving ____necessary.
| A．if | B．unless | C．in case | D．as if |
I have no dreams to have a happy life.
| A．rather than | B．more than | C．other than | D．less than |
--Good morning. How much should I pay for these books ________ to Alabama?
-- Hm, about ten dollars.
| A．being sent | B．to be sent | C．sent | D．having been sent |
How long do you think _______ the computer company turns out a new product?
| A．it will be that | B．will it be until | C．will it be since | D．it will be before |
--Mike, the telephone is ringing.
--I _________ answer it.
| A．will | B．am going to | C．am to | D．am about to |
Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _______ introduced the idea in 1953 _______ aspirin could reduce the risk of heart attacks.
| A．them; when | B．which; that | C．what; that | D．which; when |