问题

At times, parents find _______ difficult to talk with their teenage children.

A:listen to
B:am listening to
C:listened to
D:was listening to;

正确答案是：

同类题型

Passenger: Look out! There’s a kangaroo wandering on the road! Driver: ____ it! That was luckyIt can damage my car really badly

I hear your dad is ill Is he ____ better? — Thanks He’s fine now

Eastern areas have ________ too many wars in the past fifty years.

Please ________ Mary. Her telephone number is 822-3330.

getting off the train, ________ sure you have all your belongings with you.