The changes in our chemistry lab will cost quite a lot,____they will save us money in
The long run.
| A．or | B．since | C．for | D．but |
. —We’re going to Paris for Sylvia’s birthday. But it’s a secret.
—Is it? OK, I________ her.
| A．am not going to tell | B．will not tell | C．haven’t told | D．am not telling |
He ________ get into his own house because he has lost his keys.
| A．mustn’t | B．doesn’t have to | C．can’t | D．needn’t |
Caspar ________ his leg when he ________in a football match last week.
| A．broke; played | B．was breaking; was playing |
| C．broke; was playing | D．was breaking; playing |
Smoking is one of the ______ of heart disease and it kills lots of people every year.
| A．causes | B．reasons | C．excuses | D．results |
The time that he ________ in playing computer games each day is about two hours.
| A．spends | B．devotes | C．takes | D．costs |