Bob likes the camera very much because it can be _______ to take pictures in cloudy or sunny conditions.[ ]

It’s quite noisy in the classroom.–So it is. All the students ______ happily because of the coming party.

Knowing office rules, whether ______ or not, is always of great importance, especially for youngjob seekers[ ]

The plane will ____ from Beijing Capital Airport and land in London.

The conference has been held to discuss the effects of tourism________the wildlife in the area.[ ]