—What about _____ English-Chinese dictionary on the bookshelf?—In my opinion, it’s _____ useful tool book for my English learning.
---Would you like a cup of tea? ---.
---Hello, May I speak to John? ---, please call back later.
Itwhen Imy homework last night.
Computers are usedworkershelping make many dinfferent things now.
---Can you stay here longer? ---, but I have to be back tomorrow.