The patient is supposed to go to the hospital for ___________ checks.
| A．common | B．normal | C．regular | D．usual |
An official is said _______ fire to a camp in the field, _______ one death and two injuries.
| A．to set, causing | B．to have set, causing | C．to have set, caused | D．to set, caused |
The soldiers have to stand for hours without changing.
| A．position | B．situation | C．location | D．condition |
Last night’s TV news said that by then exact evidence for the missing plane MH370.
| A．had not been found | B．had not found |
| C．has not been found | D．has not found |
“Your homework is all right; , you can do it better, I think.” said the mother.
| A．but | B．while | C．however | D．though |
Birds singing is sometimes a warning to other birds away.
| A．Stay | B．staying | C．stayed | D．to stay |