According to the engineer, there remain some tests _____ before the machine is put into operation.
#91175
A
carrying out
B
carried out
C
being carried out
D
to be carried out
推荐题目
If ____ in, the viruses can result in illness or even deaths.
#94746
A
breathed
B
to breathe
C
breathes
D
is breathed
5．Michael’s new house is like a huge palace, with his old one.
#98992
A
comparing
B
compares
C
to compare
D
compared
The bridge was built in memory of the adventurer who was believed ______ the valley.
#91202
A
to have been discovered
B
to discover
C
to have discovered
D
having been discovered
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
She did nothing _______ at the photo.
#98774
A
except look
B
but to look
C
except to look
D
but looking