-How can we learn English well?-First, you must know the __________ of learning English.A. importance B. important C. importantsD importantis
Miss Liu said ______ she would leave the message on the headmaster’s desk.
-______ a visit to Beijing this summer holiday?-That’s a good idea!
These animals are in danger.We should think ______ to protect them.
Either you or I ______ going there tomorrow.
Our English teacher is kind ________ helpful.