I won't come back _________August 5 and 7, so you’ll have to go there alone.
—What’s the matter? —_______
______exciting news! We have never heard ____long vacation before.
— Your brother often disagrees with you,________ he?—_________ .We often have different opinions.
— Peter has made great progress in math recently. — _________ , and so have you.
We believe we can _____ a way to solve the problem of pollution in the future.