The wide spread of super hybrid rice around the world ______ the lives of millions and millions of people suffering from hunger to a great level.
#102778
A
has improved
B
is improving
C
improved
D
has been improving
推荐题目
I into robots and used to make mobile phones as well as help with medical operations.
#102747
A
have put
B
have been put
C
had put
D
had been put
As a teacher, he is ______ to work hard and must be strict in his work.
#101428
A
expected
B
known
C
hoped
D
suggested
—I heard the peasants here very poor in the past.—Yes,but there great changes in the past few years.
#104537
A
have been;have been
B
have been;were
C
were;have been
D
were;were
The workers were so tired that they fell asleep where they ______without undressing.
#100749
A
lying
B
were lying
C
lied
D
were lain