－Let's go to the park tomorrow morning.
－Sorry, I've got an important appointment at 9 o'clock and I can't______to miss it. (济宁市)
| A．manage | B．help | C．wait | D．afford |
Sun Yang, a young Chinese swimming talent, ___________several gold medals before 2012 London Olympics.
| A．won | B．has won | C．had won | D．were to win |
The government has taken some measures to solve the shortage of electricity, but it may be some time ____________ the situation improves.
| A．since | B．when | C．unless | D．before |
Mary had to go to a meeting，so she left her children ___________ at home.
| A．playing | B．played | C．to play | D．having played |
A cell phone could ___________the energy which could activate your brain.
| A．give away | B．give off | C．give back | D．give up |
I think it a great honor ___________ to visit your country.
| A．to invite | B．inviting | C．having invited | D．to be invited |