--Who has opened the door? ---I think it __ be Lin Tao. He’s always the first to get here.
| A．is able to | B．can't | C．must | D．mustn’t |
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 |
My parents have always made me __________ about myself, even when I was twelve.
| A．feeling well | B．feeling good |
| C．feel well | D．feel good |