The_______waiter came up to us and said,"You are welcome."
| A．smiling | B．smiled | C．smile | D．to smile |
The
weather in this area is generally warm，but it be very cold sometimes．
| A．must | B．can | C．should | D．need |
Not everyone is equal to the task because it special skills and much patience．
| A．calls for | B．calls out | C．turns into | D．turns up |
The experiment turned out to be very successful， was more than we could expect．
| A．what | B．that | C．which | D．this |
Some medicine，when wrongly，can kill a person
| A．take | B．taking | C．taken | D．to take |
The fire fighters soon got the fire in the building
| A．under attack | B．under control |
| C．under construction | D．under way |