The noises of the aeroplanes almost _____ the people living near the airport mad.
| A．forced | B．drove | C．caused | D．kept |
_______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; / |
—What do you think I should wear for such a formal press conference?
—Dress _______ you like.
| A．how | B．what | C．whatever | D．however |
Radium salts，which have been found to ______ in bones，give rise to bone cancer.
| A．pile up | B．build up | C．keep up | D．pull up |