It is extremely urgent that they （　） from the mountain before dark.

A:must be rescued  B:should rescue C:can be rescued  D:be rescued

It is urgent that a new president ______ for the university.

A:is elected B:elected C:will be elected D:be elected

The energy companies ______ urgent studies of the Arctic environment.

A:made B:put C:moved D:launched

It is extremely urgent that they ______ from the mountain before dark.

A:must be rescued B:should rescue C:can be rescued D:be rescued

It is urgent that a new president ______ for the university.

A:is elected B:elected C:will be elected D:be elected

The energy companies ______ urgent studies of the Arctic environment.

A:made B:put C:moved D:launched

It is extremely urgent that they ______ from the mountain before dark.

A:must be rescued B:should rescue C:can be rescued D:be rescued