In the UK and the USA people often give flowers and cakes as birthday presents. They open

问题补充：

In the UK and the USA people often give flowers and cakes as birthday presents. They open their presents at once.

A. always

B. never

C. sometimes

D. hardly ever

答案：

(答案→)A. always

B. never

C. sometimes

D. hardly ever

解析：本题的含义是在英国和美国的人们收到礼物总是现场马上打开，always表示总是，与本题意思相符，故本题选A。