When did she do her homework?

We think they are very unhealthy. 

We do not have supper at eight in the evening. 

望采納,謝謝

謝謝，不過(guò)第二個(gè)和第三個(gè)是這樣的We have supper at eight in the evening(改為否定句)We _____ _______ _______ at eight in the evening.We think they are very healthy(改為否定句)We _____ think they _____ very healthy.We _____ _______ _______ at eight in the evening.We don't have supper at eight in the evening. We _____ think they _____ very healthy.We don't think they are very healthy.