13.______studying abroad can be hard, it can broaden your understanding of the word.
| A．If | B．While | C．Because | D．Since |
Those successful deaf dancers think that dancing is an activity ________ sight matters more than hearing.
| A．when | B．that | C．which | D．where |
Train services are usually ________ and run regularly every day.
| A．reliable | B．reasonable | C．flexible | D．comfortable |
She is very dear to us. We have been prepared to do _________ it takes to save her life.
| A．whichever | B．however | C．whatever | D．whoever |
--Why did you give up the job in Australia?
----Because I don’t want to stay far away from my family. You know, my family means ______ to me.
| A．everything | B．nothing | C．anything | D．something |
He’s amazingly cheerful considering all he’s had to __________.
| A．go through | B．get through | C．get in | D．go in |