28．— Is Mike going there by bus?
— He ought to, but he ________ not. He likes riding his bike.
| A．must | B．may | C．need | D．Can |
Forgive him, please. I don’t think he broke your ruler __________.
| A．with care | B．for fun | C．with aim | D．on purpose |
I was reading attentively in my own room ________ suddenly he knocked at the door.
| A．when | B．while | C．then | D．as |
He has five___________ , and they are all doctors working in the same hospital .
| A．sons- in-laws | B．son-in-laws | C．sons-in-law | D．son in laws |
I’ll go to fight in the battle __________ you go or not .
| A．no matter | B．whether | C．even though | D．if |
There are countless ________ leaves as if they were a red blanket_______ the ground.
| A．fallen; covering | B．falling; covered |
| C．fallen; covered | D．falling ; covering |