Can you explain ______ the OPEC can have such total control over the price of oil?
| A．how is it that | B．that how | C．how it is that | D．what is it |
An old man asked Tom whichof a newspaper he would like to read.
| A．editor | B．editorial | C．edit | D．edition |
There is a sign at the train station, reading “Don’t jump off a train when it’s.”
| A．on move | B．on a move | C．on the move | D．moving |
who had arrested him three times for drug-taking.
| A．Before George stood the policeman | B．Before George the policeman stood |
| C．Before the policeman stood George | D．Stood before the policeman George |
—Hi, Tracy, you look tired.
—I am tired. Ithe living room all day.
| A．painted | B．had painted | C．have been painting | D．have painted |
The science of medicine,progress has been very rapid lately, is perhaps the most important of all the sciences.
| A．to which | B．in which | C．which | D．with which |