The number of people who ____English as a foreign language __more than 750 million.
| A．learns; is | B．learn; are |
| C．learns; are | D．learn; is |
Some passers-by witnessed the car accident ______ five passengers were killed.
| A．where | B．which |
| C．that | D．when |
John returned with two workers, with_______ help we finally got the car out of the mud.
| A．whose | B．their |
| C．which | D．that |
I am looking forward to the day my daughter can read this book and know my feelings for her.
| A．as | B．why |
| C．when | D．where |
--- Is it true that Mike refused an offer from Yale University yesterday?
--- Yeah, but I have no idea _______ he did it; that’s one of his favorite universities.（2014）
| A．when | B．why | C．that | D．how |
—The two people speak different languages and can not communicate with each other well.
—Oh，I see. That’s ________ misunderstanding occurs.
| A．when | B．what |
| C．which | D．why |