Mary _______ her mother with the housework, but she didn’t.
| A．must have helped | B．ought to have helped |
| C．must help | D．should help |
_____ himself with necessary knowledge and skills, the young man went to the job market with much confidence.
| A．Equipped | B．Having equipped | C．Equipping | D．To equip |
—How long is it ______ you picked up your badminton training?
—It was not until my finance became better last December _____ I started the training.
| A．before; when | B．until; that |
| C．that; when | D．since; that |
—Pity you missed the lecture on nuclear pollution.
—I _____it, but I was busy preparing for a job interview.
| A．attended | B．had attended |
| C．would attend | D．would have attended |
She was reading a book in her chair _____ first time I saw _____ old lady.
| A．a; an | B．the; the | C．/; the | D．/; an |
_____ team wins on Saturday will go through to the national championships.
| A．No matter what | B．No matter which |
| C．Whatever | D．Whichever |