—What do you think of teaching，Bob?
—I find it fun and challenging.It is a job ________ you are doing something serious but interesting.
| A．where | B．which | C．when | D．that |
If you decided to study in America, you have no choice but ________ your English greatly.
| A．improves | B．improving |
| C．to improve | D．improve |
Barbara often makes a schedule to get herself ________ of what she is to do in the day.
| A．remind | B．reminded |
| C．reminding | D．to remind |
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 |