__________ you understand the rule, you will have no further difficulty.
| A．While | B．Once | C．Though | D．Unless |
Allow children the space to voice their opinions, ____they are different from your own.
| A．until | B．even if | C．unless | D．as though |
Peter has been out of work for half a year, so he wants to ______a job in this company.
| A．prepare for | B．apply for | C．wait for | D．care for |
．—I’m sorry to have brought you so much trouble.
— _________.
| A．My pleasure | B．No problem |
| C．That’s right | D．You’re welcome |
—I never thought Jerry can speak English so fluentlyl.
—Well, actually he_________in the USA for two years.
| A．was staying | B．stays | C．stayed | D．has stayed |
I wonder________there are so many natural disasters across the world in 2010.
| A．which it is that | B．what is it that |
| C．how it is that | D．why it is that |