The English-Chinese dictionary helps me a lot. I often _____ new words in it.

The English-Chinese dictionary helps me a lot. I often _____ new words in it.

A．put up            B．pick up           C．catch up          D．look up

The English-Chinese dictionary helps me a lot. I often ______ new words in it.

1. A.
   put up
2. B.
   pick up
3. C.
   catch up
4. D.
   look up