Evdence has been found through years of study children’s early sleeping problem are likely to continue when they grow up.
| A．why | B．how | C．whether | D．that |
His heart beats fast ______ he hears her voice.
| A．as though | B．now that |
| C．even though | D．every time |
The other two areas ____ British and American English differ are spelling and pronunciation.
| A．in which | B．which |
| C．that | D．what |
I walked all the way from home to the library, only____it closed.
| A．find | B．finding |
| C．found | D．to find |
Imagine a situation_____two strangers are talking to each other.
| A．which | B．where |
| C．that | D．when |
It was in the factory where he was working ____I met him.
| A．that | B．which |
| C．where | D．in which |