1 The plane was highjacked while on a flight to Delhi.

2 We certainly do not want a highjack to ha en on the plane today.

3 We certainly don't want a highjack to ha en on the plane today.

4 We certainly don't want a highjack happen on the plane today.

5 We certainly don't want a highjack to happen on the plane today.

6 B : I think so. We certainly don't want a highjack to happen on the plane today.