Ladies and gentlemen, please fasten your seat belts．The plane ________．
| A．takes off | B．is taking off | C．has taken off | D．took off |
One evening Harry phoned me, ________ me to come to his flat as soon as possible.
| A．asked | B．having asked |
| C．asking | D．being asked |
________ early for his date, Mark spent time reading the newspaper.
| A．Arriving | B．Having arrived |
| C．Arrived | D．To arrive |
I got to the office earlier that day, ________ the 7：30 train from Paddington.
| A．caught | B．to have caught |
| C．to catch | D．having caught |
The lecture, ________ at 7：00 pm last night，was followed by an observation of the moon with telescopes.
| A．starting | B．being started |
| C．to start | D．to be started |
You cannot accept an opinion ______ to you unless it is based on facts.
| A．offering | B．to offer |
| C．having offered | D．offered |