I wish I a chance to talk to you last night, but you left so early.
—How many practical plans has your deskmate made this week? —. All have turned out disappointing.
The best times to visit Shangri-la are spring and autumn ____ the temperature is at its mildest.
Scientists study ____ human brains work to make computers.
______ in the school campus in spring, we will always noitce a colorful display of flowers.
It’s great that all the visitors who _______ on the island were saved.