—Why do you look worried?—There are so many problems __________.
| A．remaining to settle |
| B．remained settling |
| C．remaining to be settled |
| D．remained to be settled |
I shall never forget the day _________Shen Zhou V was launched,_________has a great effect on my life.
| A．when;which | B．that;which | C．which;that | D．when;that |
The humans are destroying nature day by day,__________of course,will cause severe punishment from it sooner or later.
| A．who | B．when | C．on which | D．which |
.—We’ll eat as soon as the meat is done.
—It has__________to cook for another five minutes.
| A．still | B．yet | C．already | D．may |
Susan was completely weighed down by the__________of examinations.
| A．strength | B．power | C．value | D．stress |
The plan was that the two parties should first reach an agreement on the basic ________,the details to be worked but later.
| A．standards | B．practice | C．habits | D．principle |