Ladies and gentlemen, please remain ________ until the plane has come to a complete stop.
#98409
A
seated
B
seating
C
to seat
D
seat
推荐题目
________ in 1636, Harvard is one of the top universities in the United States.
#90179
A
Being founded
B
It was founded
C
Founded
D
Founding
 It rained heavily in the south, _____ serious flooding in several provinces.
#90186
A
caused
B
having caused
C
causing
D
to cause.
 Please remember _______ the plants while I’m away. 
#98426
A
watering
B
to be watering
C
to water
D
being watering