When the building burns, the firemen will arrive at once and the fire.

下列各句中不含通假字的一句是

ar me! I’ve been in America for amonth.—–________ you are settled, why don’tyou take up some serious study

We found ____ very easy to learn a foreign language well ____ the teacher’s help.

To improve the quality of our products, we asked for suggestions _______ had used the product.