286. In 1920 Poland and Russia were still at _______and they mustn’t trade in agricultural products with each other.
Not until the train pulled into the next station _______her suitcase gone.
The heavy fog in London made _______deep impression on us, which was sometimes so heavy that we lost ________sight of everything.
Thegovernmentshouldprotecttheoldvaluablebuildings____theyarenotin harmonywiththemodernonesnearby.
We used to see each other, but I haven’t heard from him since last year.
Dr.Smith as well ashisdaughters,visitBeijingthissummer.