It was not until 1938 _________ the first colour TV programme was broadcast.

Mr. Wang, have you corrected the papers? — Yes, but I regretthat you didn’t pass it. [ ]

The more you learn, the more ________ you can pass the exam.

Could I go boating this weekend, Dad—Yes, you ________. But you ________ come back before lunch.

When did your school hold the sports meet—Last week. And I _______ the girls’ 400-metre race.