It is said that sixty percent of all energy ________ in the world today is being lost as waste heat.
#88518
A
produced
B
producing
C
to produce
D
having produced
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Great attention must be paid ____ welfare, especially in the poor area.
#89594
A
develop
B
to develop
C
to developing
D
developing
Sichuan Province, ________ in southwest China and ________ an area of 485,000 kilometers with the largest population in China, is one of the largest and most inaccessible provinces in China.
#95481
A
located; covered
B
locating; covering
C
located; covering
D
locating; covered
As a student, every minute should be made use of _______.
#90806
A
study
B
to study
C
studying
D
studied
After completing and singing it, please return the form to us in the envelope _________.
#89992
A
provided
B
providing
C
having provided
D
provide
The fire ______ at might was still seen ______ the next morning.
#96802
A
breaking out; burning
B
to break out; to burn
C
broke out; burnt
D
had broken out; burning