当你在野外发生意外,急需援救时,你应该打出什么信号? A.SOS B. UFO C.WTO
The little girl is ________ young ________ look after herself.
The two dresses are very nice. I can’t decide _________。
Sixteen-year-olds should _________their ears pierced.
His grandparents used to ________ a walk after dinner, but now they are used to ________ a walk after breakfast.
My sister was ________out at night.