It is said that over 50 percent of China’s population _________ working in the cities in 2013, so there are fewer and fewer people on the farm now.

youcalled Mr Johnson’s office— Yes, he _____ back before tomorrow So he can attend our meeting on time

1— Tommy, do you know ifFrank ______ to the zoo this Sunday if it _______?— Sorry, I haveno idea.

I found ____ hard to get out of bed on cold winter mornings.

下列各句中,没有语病的一句是(　　)