---Who’s the man talking to our teacher?---A professor_____a visit our school.
#88884
A
pays
B
to pay
C
paid
D
paying
推荐题目
Once _____ , the machine will keep running.
#94334
A
start
B
started
C
to start
D
starting
The flowers need ____.
#97809
A
watered
B
to water
C
water
D
watering