_______ you don’t have much experience in this field, why don’t you ask ProfessorWang for advice?
_______ the general state of his health, it may take him a while to recover from the operation.
In order to gain a bigger share in the international market, many state-run companies are striving _______ their products more competitive.
Fishing is his favorite hobby, and _______.
There are five pairs _______, but I’m at a loss which to choose.
—What do you think made Mary so upset? —_______ her new bike.