He didn't _____ what I read because his mind was on something else.
| A．hold on | B．catch on | C．take in | D．get over |
He asked me ________ I had read the book written by Anne Frank.
| A．that | B．what | C．how | D．whether |
— May I smoke here?
— No, you ________. Can’t you read the sign “NO SMOKING”?
| A．mustn’t | B．won’t | C．needn’t | D．Don’t have to |
The US is a large country ________ many different dialects are spoken.
| A．what | B．when | C．where | D．which |
Ever since middle school, my sister and I ________ about taking a bike trip.
| A．dreamed | B．dream | C．have dreamed | D．had dreamed |
Be sure to read the ________ before you take the medicine.
| A．commands | B．situations | C．expressions | D．directions |