Do you know when the basketball_________?
A. is invented B. was invented C. has invented D. had invented
Although I failed four times, my father encouraged me to have a ______try.
A. second B. third C. fourth D. fifth
—Must I finish the work today, mom ?
—No, you ______.You can finish it tomorrow.
A.mustn’t B. can’t C. shouldn’t D. needn’t
The food in the small restaurant smells good, but I don’t know how it ________.
A. sounds B. tastes C. feels D. looks
They will lose the game ______they try their best.
A. unless B. when C. since D. after
—Do you still remember where we first met?
—Sure , just in the library. And it ______at that time.
A. rained B. was raining C. has rained D. is raining
