----How about your trip to Hainan?----It couldn’t have been _____. Sometimes I went swimming in the sea; sometimes I lay on the sand.

My new house is very ________ for me, as I can get to the supermarket to buy some everyday goods in five minutes.

A study has proven old people who are ______eaters of fish during their youth lose fewer brain cells. 

___Are you pleased with his answer? ____Not at all . It couldn’t have been _________.

Can you tell me the        difference between the words “require” and “request” ? I sometimes get puzzled by their meanings.