She doesn’t ________ much money，but she enjoys the work.
| A．appreciate | B．earn | C．employ | D．charge |
Penicillin was then produced ________ in order to meet the demands of the armies.
| A．in large amounts | B． in large plenty |
| C．in large quantities | D． in large number |
A study ________ in the U.S.A. in 1977 showed that the chemical ASA in aspirin could prevent a stroke.
A. carrying out B. carried out C. working out D. worked out
I wonder if this is the computer you want______ .
| A．to have repaired | B．to have it repaired | C．it to be repaired | D．to repair it |
The teacher insisted that I______ a mistake and insisted that I______ the physics problem again.
| A．make; did | B．made; did | C．make; do | D．made; do |
---Can we sit at the table near the window?
---I’m sorry, but it______ already.
| A．was taken | B．has taken | C．has been taken | D．has been taking |