【C16】A．aboutB．outC．offD．forward

The train from Shanghai is pulling ______.A．inB．outC．offD．back

The Internet has brought ______ big changes in the way we work.A．aboutB．outC．backD．up

【C13】A．overB．outC．offD．away

【C16】A．Taking toB．Taking forC．Taking offD．Taking on

【C16】A．attach toB．burst outC．lead toD．rely upon

The bomb will ____ the moment it is touched.A) go onB) go outC) go offD) go over