The world’s population has grown _____ it was in 1800.
| A．six times more than what | B．more than six times what |
| C．six times more than which | D．more than six times that |
When _______ there, the postman found the door locked and then stopped _______ the letter in the mailbox on the wall.
| A．reaching; putting | B．reached; to put |
| C．reaching; to put | D．reached; putting |
He doesn’t have the habit of planning his travel expense, so he won’t know what to do _______ the money runs out.
| A．once | B．before | C．unless | D．though |
The news _______ is spreading around the airport is _______ a heavy storm is coming.
| A．what; / | B．that; that | C．/; that | D．that; which |
It is known to all that a proper amount of exercise _______ to good health.
| A．benefits | B．devotes | C．values | D．contributes |
－I can’t believe that you _______ that old trick.
－Yes, I was stupid enough.
| A．dealt with | B．fell for | C．took in | D．came across |