Why does the earth look blue in space？
Because most of the earth's surface ______ by water．（ ）
A．coversB．is covered
C．coverD．are covered
Did you catch the first bus to school this morning？
No I didn't． It had started moving ______ I could get on it．（ ）
| A． |
after |
B． |
since |
C． |
before |
D． |
as soon as |
Our plan to have a graduation ceremony _____ in the next class meeting．（ ）
| A． |
was discussed |
B． |
will discuss |
| C． |
is discussed |
D． |
will be discussed |
Mr. Collins like tea． He makes a cup of tea for himself every morning．（ ）
| A． |
must |
B． |
may |
C． |
can't |
D． |
mustn't |
Because of COVID﹣19 in February， the government advised us to the public places less．（ ）
| A． |
going |
B． |
go |
C． |
to go |
D． |
gone |
How was your trip in the mountains last weekend？
Fantastic．We even a tent by the lake and lay in it．（ ）
| A． |
put on |
B． |
put off |
C． |
put down |
D． |
put up |