Which two sentences in the following convey the same idea? Choose from the
combinations listed below:
1.Wasn’t there any checking at the airport?
2.I want to know if there was any checking at the airport.
3.I wonder if there should have been any checking at the airport?
4.There should have been checking at the airport.

A

2,3

B

1,2

C

3,4

D

2,4