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 |
By all _______, you must try every _______ to help him.
| A．mean, mean | B．means, means |
| C．means, mean | D．mean, means |
In fact, _______ one cause that leads to the problem.
| A．cattle is | B．cattle are |
| C．cattles are | D．the cattles are |
She is not a competent driver and can’t cope with driving in _______.
| A．heavy traffic | B．heavy traffics |
| C．crowded traffic | D．crowded traffics |
“Why couldn’t they meet us at five o’clock?” “Because they were delayed by ________.”
| A．heavy traffic | B．heavy traffics |
| C．crowded traffic | D．crowded traffics |
Her father works as a ______ in a hotel and her mother a ______ in a private company.
| A．cooker, typewriter | B．cook, typist |
| C．cooker, typist | D．cook, typewriter |