If Newton lived today,he would be surprised by what_____in science and technology.
#104075
A
had discovered
B
had been discovered
C
has discovered
D
has been discovered
推荐题目
So far, no agreement ________ on which type of exercise is best suitable for keeping fit.
#99157
A
has reached
B
has been reached
C
was reached
D
had been reached
More than a dozen students in that school ____ abroad to study medicine last year.
#101410
A
sent
B
were sent
C
had sent
D
had been sent
--Why does the lake smell terrible? -- Because a large amount of water_______.
#99621
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
—Jim,have you finished reading Harry Potter and Half-Blood Prince?—No.I______ my father on the farm all day yesterday.
#104374
A
would help
B
had helped
C
was helping
D
have been helping
It’s the third time he _________with her in a week.
#101319
A
had quarreled
B
quarreled
C
has quarreled
D
quarreling