The door opened and there .
| A．entering our English teacher |
| B．entered our English teacher |
| C．did our English teacher enter |
| D．our English teacher entered |
Mr. Wang made up his mind to devote all he could _____ his oral English before going abroad.
| A．improve | B．to improve | C．improving | D．to improving |
Try the new cleaner. Just a few minutes every day－that’s all it takes－_________ you could have shining floors and furniture.
| A．but | B．and | C．or | D．so |
Recently some studies have found that learning ___________ second language can lead to __________ increase in one’s brain power.
| A．a; the | B．不填; the | C．a; an | D．the; an |
---Are you being_____, sir?
---No, I just want to buy a cellphone.
| A．looked after | B．attended to | C．led in | D．admitted in |
The old man had a son and a daughter, ____ treated him well, _____ greatly disappointed him.
| A．neither of them, which | B．neither of whom, which |
| C．neither of them, it | D．neither of them, which |