My mother has taught in this school ______ she was twenty years old．（ ）
| A． |
for |
B． |
until |
C． |
because |
D． |
since |
While watching the film yesterday，I couldn't stop laughing at some ____moments．（ ）
A．humorousB．challenging
C．dangerousD．surprising
US scientist Edward T．Hall said that in a conversation between two people，65% of____is done through body language．（ ）
A．applicationB．pronunciation
C．introductionD．communication
According to the notice，guests at this hotel____use the sports center at no extra cost．（ ）
A．canB．shouldC．mustD．need
On April 24，Xie Wenjun raced to gold in the____110﹣meter hurdles at the Asian Athletics Championships in Qatar．（ ）
A．manB．menC．men'sD．mens'
If you want to take____short ride in the city，choose____shared bike．（ ）
A．a；/B．the； theC．a；aD．/；a