问题

The pilot asked all the passengers on board to remain ________ as the plane was making a landing [ ]

A: seat
B: seating
C: seated
D: to be seating

正确答案是：

同类题型

Did you go to the beach with your parents last weekend —No, we ________ went to the mountains instead.

下列语句中，加点字的解释不正确的一项是（）

don’t feel like going to the sports meet next week. There are too many excellent athletes. — It is foolish of you to _______ trying.

Our family will go to Australia for a holiday. —Oh, really? That sounds __________!

ou read the book, you’d better make a mark_____ you have any questions