I ________ waiting for about an hour when she came.-考呗网题库移动版

单选题 I ________ waiting for about an hour when she came.

A．had been
B．have been
C．have had
D．had

参考答案A

解析:
考查时态。Came表明是过去发生的事，waiting表明正在发生，所给选项都与完成时有关，说明到过去的那个时间为止，某项动作已经发生并还在发生着或刚刚结束，应用过去完成进行时。选项A是正确的。【句子大意】她来时我已经等了有一个小时了。

单选题 He is always complaining about one thing or ________ .

A．another
B．something
C．others
D．anything

单选题 Nothing is as ________ as one's health.

A．happy
B．comparative
C．precious
D．generous

单选题 Robert goes to the gym only two or three times a year. He ________ goes to the gym.

A．always
B．never
C．usually
D．seldom