The university estimates that living expenses for international students ________ around $8,450 a year, which ________ a burden for some of them.
| A．are；is | B．are；are | C．is；are | D．is；is |
All the neighbors admire the family _______ the parents are treating their child like a friend.
| A．why | B．which | C．that | D．where |
The manager is still on _______ vacation, so I will be in _______ charge of the meeting today.
| A．/; the | B．the; / | C．/; / | D．a; the |
Last weekend, Tom and Linda went shopping outside and went on spending until their money was_________.
| A．at the end | B．at an end | C．by the end | D．in the end |
I don’t like the way ______ you speak to your mother.
| A．which | B．in that | C．by which | D．/ |
_______ is known to everybody, the moon travels around the earth once a month. .
| A．It | B．As | C．That | D．What |