下列各组字母中,全部是元音字母的是_____.A. a, e, r B. i, u, e C. o, p, u
Many birds fly away because plants die and insects hide_____ coldness_______ winter.
It will be __________ tomorrow and there will be much___________.
We should do everything we can ________ the birds__________danger.
-----Can you speak Japanese ? -----Yes, but only __________.
The man is badly hurt. The doctors are doing what they can ____________ him.