I have great_____ in learning math and I am so worried.
| A．trouble | B．interest |
| C．fun | D．problem |
It _________about an hour to take the underground from the town to the city.
| A．costs | B．spends | C．pays | D．takes |
She must be a true friend. She never _______ a bad word about others.
| A．speaks | B．says | C．talks | D．tells |
He found _________ to sleep.
| A．difficult to get | B．it difficult getting |
| C．it difficult to get | D．that difficult to get |
Lei Feng is my hero. We should learn from him and think less of____ than others.
| A．us | B．ourselves | C．our | D．ours |
My mother is ill. I ______ stay at home to take care of her.
| A． can | B．may | C．have to | D．maybe |