It is only when you nearly lose someone ____________ you fully realize how much you value him.
| A．do | B．then | C．will | D．that |
In a Han Dynasty tomb, they found some precious jars and vases, _______ are valuable.
| A．even the pieces of them | B．which even pieces |
| C．even the pieces of which | D．that even pieces |
I cannot _______ that all of the students will enjoy your classes. After all, students’ tastes vary.
| A．appoint | B．subscribe | C．guarantee | D．evaluate |
_______no doubt that a green campus plays an important role in the growth of students, both physically and mentally.
| A．It is | B．There has | C．There is | D．It has |
How nice it _______ if I _______ an elder brother like you!
| A．was; had | B．would be; had had | C．would have been; had | D．would be; had |
An engineer has designed _______ robot that can work in _______ deep sea to clean waste.
| A．a; the | B．a; a | C．/; the | D．the; / |