Despite other scientists' __________ of interest, Fleming kept trying to develop the chemical __________ it would be safe and effective.
| A．lack； so as to |
| B．lacking； so as to |
| C．lack； so that |
| D．to lack； so that |
It’s our presence rather than our presents ____ really counts.
| A．which | B．what | C．why | D．that |
He has worked out exactly what his income will have to be during the first six months to _____ his costs.
| A．spare | B．cover | C．save | D．spend |
Only when the war was over in 1945 ______ able to get back to work.
| A．was he | B．did he | C．could he | D．could he be |
To make your argument more ________, you should put forward more supporting information.
| A．convinced | B．convincing |
| C．to be convinced | D．to be convincing |
There is something wrong with his throat; ______, Michael has to give up the singing competition.
| A．as a matter of fact | B．on the whole |
| C．as a result | D．in particular |