With sufficient scientific information a manned trip to Mars should be _____.
The new law states that people _____ drive after drinking alcohol.
.——John, when shall we play badminton again, Friday or Saturday ?——.I’ll be off to Shanghai then.
Her previous experience makes her have a big advantage _______ the other applicants
Fred is second to none in English in our class, but believe it or not, he _____ passed the last exam.
Although some athletes _______ their sports ambitions , there are still many more struggling for success .