—What colour __________your shoes?— __________ black.
The physics problem is very difficult. Can you ________? A. work out itB. work it out C. work it on
This computer is the best one ____ the shop, but it is also the most expensive ___all the computers.
—Mum, could I have __________ bread? —Of course.
----What’s your best friend like? ----________________________
Millie has _____free time than Sandy because she has____ work to do than Sandy.