Don't you think it a pity that John ______ have behaved roughly toward us?
| A．should | B．would | C．could | D．might |
I borrow the book Sherlock Holmes from the library last week,my classmates recommended to me..
| A． | who | B． | which |
| C． | when | D． | Where |
Last night, there were millions of people _______ the opening ceremony live on TV.
| A．watch | B．to watch |
| C．watched | D．watching |
__ carefully if any change occurs when doing experiments in the lab..
| A．Observe | B．To observe |
| C．Observed | D．Observing |
Jane is in a hurry because the train to the airport leaves _______ half an hour.
| A．by | B．in |
| C．for | D．until |
---Hi, let’s go skating.
--- Sorry, I’m busy right now. I _______ in an application form for a new job.
| A．fill | B．have filled |
| C．am filling | D．will fill |