--- What’s the use of this kind of fuel(燃料) ?
--- It can make the train __________ fast.
| A．to go | B．going | C．went | D．go |
______ she did this, all would be well.
| A．As long as | B．So long | C．As if | D．Even if |
_______ the heavy rain, many people were late for work.
Because B. Because of C. As D.Since
Tom _________ in making a model plane. It was a _________.
| A．succeed; success | B．succeeded; success |
| C．succeeds; successful | D．succeeded; successful |
The trip will take us ________ days.
| A．the third | B．third | C．three | D．one |
—How ______ your holiday?—Not bad.
| A．were | B．was | C．be | D．are |