Students shouldn’t be given so difficult a problem ______they can not work out.
The government has taken measures to ____ the high prices of daily goods to keep the market stable.
-- I bought the dress at _____ normal price. -- Well, it’s a _____ bargain.
----I can’t thank you more for the present you sent me the other day. ----____________.
Do you remember those days _______ we spent together along the seashore very happily?
For _______information about present national boundaries, we’d better refer to an up-to-date map.