(1)I(not know) him two years ago.
(2)When it is fine tomorrow, we (go) to the park.
(3) Peter (not go) to school yesterday because he (be) ill.
(4) When Linda (be) young, she danced very well.
friend (复数) body (复数)
small (反义词) visit (名词)
those (单数) north (对应词)