Daniel，why are you so late? We _______ you would be here an hour ago— SorryI ________ know you were all here

, he can answer the difficult questions.

time of HINI, scientists ____ their spare timeto conduct research on the ways of curing the disease

Have you been to your hometown this year— Yes, and it has changed alot ________.

Mr Black _____ his wife to teach their child a lesson. So he did.