You can’t see anything clearly through a telescope unless it ________ correctly to your sight

My grangpa told me that learning English well _______ a must for us young people in this modern society

It’s so hot here. Do you mind ____________ the window—____________. I will do it right now.

Have Max and Tina sold out all of the Englishdictionaries — Yes,completely. __________ is left.

It is commonly assumed that thegrowth of GDP and the development of people’sliving conditions are not _______cause and effect.