________you’ve experienced it，you can’t understand how I felt.
| A．Once | B．Because |
| C．Unless | D．While |
The majority of employers are planning to cut down on wages＿＿＿＿the economic crisis.
| A．by means of | B．in defence of |
| C．in reaction to | D．with regard to |
There is＿＿＿＿thing as failure. Failure is just life trying to move us in another direction.
| A．no such | B．not such | C．such no | D．such not |
Yesterday afternoon, I ______ basketball with my classmates for two hours.
| A．play | B．played | C．have played | D．had played |
In my opinion, life in the twenty-first century is much easier than ___________.
| A．that used to be | B．it is used to |
| C．it was used to | D．it used to be |
The field research will take Joan and Paul about five months; it will be a long time _________ we meet them again.
| A．after | B．before | C．since | D．when |