The farmers needed 　　　　 agricultural technology. Therefore, 　　　　 skilled workers were sent there.

nly everyone stopped talking Itbecame clear that something unexpected _____ But, for a while, I didn’t knowwhat it was

Do you like fast food — No, I don’t. I _______ go to McDonald.

I don’t know .

Bob can play________tennis but he can’t play________violin．