To be mentally healthy，you need to        good relationships with each other．

A．hold up      B．put up      C．take up      D．build up

Persons under 18     not be employed in night work according to our government's regulation．

A．might       B．need        C．could        D．shall

Don't worry too much about      mistakes．They are     natural part of learning．

A．the；a       B．不填；a        C．the；不填          D．the；the

Mike didn't notice Alice entering his room．He       a phone call．

A．a(chǎn)nswered                           B．has answered

C．was answering                                          D．is answering

—I'd like to invite you to my birthday party this evening．

—Thanks．but         I'll have time I'm not sure at the moment．

A．while          B．whether        C．that              D．when

       not to miss the flight at 15：20．the manager set out for the airport in a hurry．

A．Reminding      B．Reminded       C．To remind          D．Having reminded

If you have a chance．        your best and finally you'll succeed．

A．not trying       B．don't try        C．trying            D．do try

Luckily．we all had completed our own tasks by 10：30，     was the deadline．

A．what           B．when          C．which            D．that

The young man acted strangely during the interview．He made a bad     on the employer．

A．impression      B．expression      C．experience        D．a(chǎn)ppearance

—Will you go to Mary's birthday party?

—No，      invited，I can't go to it．I'll be too busy then．

A．a(chǎn)s if                           B．unless

C．even though                                              D．when