You shouldn’t have the machines ______ all the while. You ought to have them ______ now and then.
#97579
A
run; repair
B
running; repairing
C
run; repaired
D
running; repaired
推荐题目
----Can you attend tomorrow’s meeting?----I am sorry , but I will have too much work__________．
#90920
A
to see to to come
B
seeing to come
C
to see to coming
D
doing to come
A cook will be immediately fired if he is found _______ in the kitchen.
#98618
A
smoke
B
smoking
C
to smoke
D
smoked
____ by high mountains, the city is infamous for air pollution.
#90478
A
Surrounding
B
To be surrounded
C
Surrounded
D
Having surrounded
—Where is our English teacher?—She is in the classroom, _____ the exercises _________ the students have done at home.
#98211
A
explaining; /
B
explaining; for
C
explained; to
D
explained; from
“ Have you decided when ________?” “ Yes, tomorrow morning.”
#98794
A
to leave
B
to be leaving
C
will you leave
D
are you leaving