—Did you enjoy yourself in Hefei this summer?—________. It was too hot.
It is every citizen's duty to _____ our country when she is attacked by the enemy.
—How long have you been here? —___ the end of last year.
It rained for several weeks, completely ____ our holiday.
Xiamen Xiang'an Tunnel, _____ is the first undersea tunnel built in mainland China, opened to traffic on April 26th.
A survey of the opinions of experts ____ that drinking a glass of hot milk before going to bed helps one sleep well.