________ if you want to do something, or you won’t be able to do it well.
| A．To try your best | B．Trying you best | C．Try your best | D．Unless you try your best |
. More and more fast-food restaurants have _____ all over the town in the last few years.
| A．come up | B．taken up | C．sprung up | D．put up |
－In what way will you use your portable computer?
－I’ll use it ______ for giving lectures at conferences at home and abroad.
| A．approximately | B．mostly | C．almost | D．most |
Franklin’s ability to learn from observations and experience greatly_____his success in public life.
| A．attached to | B．connected to | C．related to | D．contributed to |
The secretary was allowed ten more minutes.She______her boss’ patience and tried to hurry.
| A．sensed | B．tolerated | C．realized | D．understood |
We are asking people to______ goods from companies that use child labour.
| A．refuse | B．resist | C．reject | D．boycott |