Right now the writer and manager_____busy preparing for the following meeting.
| A．is | B．Are | C．was | D．were |
The flowers his friend gave him will die unless __________ every day.
| A．watered | B．watering |
| C．water | D．to water |
Please remain __________ until the plane has come to a complete stop.
| A．to seat | B．to be seated |
| C．seating | D．seated |
Jenny hopes that Mr. Smith will suggest a good way to have her written English __________ in a short period.
| A．improved | B．improving |
| C．to improve | D．improve |
— Did Peter fix the computer himself?
— He __________, because he doesn’t know much about computers.
| A．has it fixed | B．had fixed it |
| C．had it fixed | D．fixed it |
John received an invitation to dinner, and with his work __________, he gladly accepted it.
| A．finished | B．finishing |
| C．having finished | D．was finished |