The workers will go on strike if the demands they ________ put forward are turned down.
A. could B. would C. 不填 D. had
The moment the 28th Olympic Games ________ open, the whole world cheered.
A. declared B. have been declared C. have declared D. were declared
Ladies and gentlemen, please fasten your seat belts. The plane ________.
A. takes off B. is taking off C. has taken off D. took off
Look at the timetable. Hurry up! Flight 4026 off at 18:
A. takes B. took C. will be taken D. has taken
The country has already sent up three unmanned spacecraft, the most recent at the end of last March.
A. has been launched B. having been launched
C. being launched D. to be launched
—I have got a headache.
—No wonder. You in front of that computer too long.
A. work B. are working C. have been working D. worked
