The conference had been held to discuss the effects of tourism the wildlife in the area.
| A．in | B．on | C．at | D．with |
On our arrival, we found Tom_____ at the desk with his hand ______ to the distance.
| A．seated, pointing | B．sitting, pointing |
| C．seating, pointed | D．seated, pointed |
Ten professors______ the medical team to look into the cause of the disease.
| A．composed | B．consist of | C．make up | D．forms |
What great trouble the boy _____his father to give up smoking!
| A．had to persuade | B．had persuaded |
| C．had persuading | D．had persuade |
“I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”
| A．must be | B．must have been | C．might be | D．can have been |
Anyone _______ bags, boxes, or whatever, was stopped by the police.
| A．seen carry | B．seen carrying | C．saw to carry | D．saw carrying |