--You can’t have the horse ________ all the way. It’s too hot.
-- Sorry, it ________ my fault. I will stop it right now.
| A．run; has been | B．to run; was |
| C．running; is | D．to be running; has been |
Just as sound travels through the air in waves, electricity travels through the air in ______ radio waves.
| A．what is called | B．which is called | C．what it is called | D．which it is called |
It was _____ of Jack to turn off the radio when I was sleeping in the bedroom.
| A．considerable | B．considerate | C．disturbing | D．sensible |
A student will be immediately dismissed if he/ she is found _____ in school.
I failed again in the exam and only then _____ how much time I had wasted.
| A．I realized | B．did I realize | C．I had realized | D．had I realized |
—Mom. May I play computer games just for a while?
—______ ! Dad is writing his paper.
| A．Help yourself | B．It’s up to you | C．Go ahead | D．Behave yourself |