--Were you in time for the meeting?
-- If I _________earlier, I would have .

Tom, ________________ you from taking a hand in that affair, you ______________ in prison.

In front of our house ________ we used to swim.

The school _______ he once studied in is famous.

She looks sad. Could you please tell me ____ that prevents her from being as happy as before?

With the help of the high technology, this year the factory has produced ________ it did last year.

The weather was ________ cold that I didn't like to leave my room.

—What was it that caused the party to be put off?
—________ the invitations.

The new technology，if ________ to farming，will help increase the grain output.

________ this way can we smooth the difficulty we are faced with now.