Though I haven’t seen Maria for ages, I could ____ her in the crowd at the station.
| A．stare | B．realize | C．spot | D．know |
—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.
| A．can; must | B．can; may | C．must; can | D．may; must |
He apologized ________ late.
| A．to his teacher to arrive | B．to his teacher for arriving |
| C．at his teacher to arrive | D．at his teacher for arriving |
－Could I ask you a rather personal question?
－________.
| A．Yes, don’t worry | B．Of course, go ahead |
| C．Yes, help yourself | D．Of course, why not |
He ______ on the bed_____ to his parents that blackbirds had_____ their eggs on Mars.
A. lay; lying; liedB. lied; lied; lied
C. laid; laid; laid D lying; lied; laid
Children’s curiosity may _____________ many useful inventions.
| A．lead to | B．take place | C．gather in | D．bring away |