— He should have come to join in the thorough cleaning. —He _____, I think. It’s not his turn.
The scenery in the desert is quite different from _____ by the seaside.
The questions the reporter asked sometimes were ______ and they made me _______.
— I went to see a film yesterday. — Oh, did you? ______.
What great changes! It’s years since I ____ Chengdu last time.
Research shows that people feel unhappy and worried when they have nothing to do . _______, the happiest are those who are busy.