Thank you for your timely help, otherwise we _______ in great trouble now.
| A．are | B．would have been |
| C．would be | D．were |
By nine o’clock，all the Olympic torch bearers had reached the top of Mount Qomolangma，________appeared a rare rainbow soon.
| A．of which | B．on which |
| C．from which | D．above which |
Gun control is a subject________Americans have argued for a long time.
| A．of which | B．with which |
| C．about which | D．into which |
News reports say peace talks between the two countries________with no agreement reached.
| A．have broken down | B．have broken out |
| C．have broken in | D．have broken up |
She loves music and is now learning to play an ____________.
| A．instrument | B．invitation | C．incident | D．evidence |
She doesn’t ________ much money，but she enjoys the work.
| A．appreciate | B．earn | C．employ | D．charge |