In my opinion, she is too young to take care of the pet dog ______

rry, but I don’t quite follow youDid you say you wanted to return on September 20—Sorry, I ______ myself clear We want toreturn on October 20

____ is said that the terrible accident happened at midnight

Today, more Chinese people speak English and China may have the _____number of English speakers in the world．

To reduce emissions of greenhouse gases, many countries are increasing the use of natural gas, wind and other forms of _______ energy.