Doctor Smith has made another wonderful discovery, _______ great importance.
_—Did you visit the Summer Palace?—No.We could have, _______we spent too much time shopping.A.so B but C.ecause D.though
_______is often the case,he succeeded in this examination again.
_ _______broken,the glass can not hold water.
_I had just started back for the house to change my clothes_______I heard voices.
_By success I don’t mean_______usually thought of when that word is used.