Jack had to call a taxi because the box was _______ heavy to carry all the way home.

. John hadn’t been able to quit smoking at once; he had to control his smoking desire      .

The nurse gave ________ the sweets to the children.

I’m afraid I can’t attend your wedding ceremony, but thanks for the invitation_______.

—— Excuse me, is this Mr. Brown’s office? —— I’m sorry, but Mr. Brown＿＿＿works here.He left about three weeks ago.