—— ____ he start at once or wait for a while?—— Let him start at once.
He dressed up and went to the party as if ________.
After completing and signing it, please return the form to us in the envelope _______.
The book was written in 1946, _______ the education system has witnessed great changes.
He ______ be sitting at the gate, waiting for his lost son.
It is often recommended that children _______ chances to get close to nature.