I hear your grandpa has an old cup in your home.– Yes. It ________ drinking tea long ago and my grandpa _______ drink tea with it when he was young.

Will you go to Jane’s birthday party this evening, Rick—If Michael won’t, _____.

The research mainly deals with the difficulty the students have ________ their attention on their study all the time.[ ]

If people ________ cutting down the forest, theywill have nowhere _______.

__ his disadvantage, it began torain heavily suddenly