My shoes are worn out．They need_______．
| A．to repair | B．be repaired | C．repaired | D．Repairing |
He hadn’t worked hard at his lessons．_______, he failed in the exam．
| A．As a result | B．However | C．Otherwise | D．Since then |
— When did the meeting begin?
—At four o’clock．It ______ for 15 minutes．
| A．was on | B．began | C．has been on | D．has begun |
It is said that the gravity on Mars is only about __________ of the gravity on earth．
| A．three-eighths | B．third-eighth | C．three-eighth | D．third-eighths |
After a short time, the bad news had ______all over the city and everybody knew it．
| A．showed | B．spread | C．covered | D．Explored |