_____, he cannot solve the word puzzle.
| A．Hard although he tried |
| B．He tried hard although |
| C．However hard he tried |
| D．As he tried hard |
—I’m going to the United States.
—How long ______ you ______ in the United States?
| A．are; stayed | B．are; staying | C．have; stayed | D．did; stay |
Tom always prefers _________on foot rather than _______ a bike.
| A．walk; ride | B．walk; riding | C．to walk; ride | D．riding; to ride |
—You went to the US last month , didn’t you?
—Yes. That was the first time that I________ there.
| A．went | B．had gone | C．had been | D．have been |
The engine of the bus was out of order and the bad weather ___ the worries of the passengers .
| A．added up | B．added to | C．made of | D． resulted from |
（原创题）The patient insisted that he _____ ill, and _____back home at once.
| A．wasn’t , was sent | B．isn’t , be sent | C．wasn’t , be sent | D．should be , send |