----- Why did you eat your words, Billy?
----- Sorry, dear．But I really forgot where I was _____ to meet you．

Before going abroad he devoted all he could ____ his oral English.
A. to improve   B improving   C. to improving    D. improve

I like getting up very early in summer. The morning air is so good ____

______ not to miss the flight at 14:23, the manager set out for the airport in a hurry.

Our company forbids ______, that is to say, we are not allowed ______here.

He sent me an e-mail, ______to get further information.

.After graduation I was employed by a small private business and a small office was _______
for me.

_______ a reply from Mabel, Jack sent another e-mail to her.

It is so wet there that the trees are extremely tall, some              over 90 meters.

He was               with his             son.