1. .......... you work harder, you will be sacked. A. However B. if C. whether D. Unless 2. If you don't know how to spell a word, you .... look it up in the dictionary. A. will B. ought C. must D. should 3. Can you ...... the butter on this slice of bread for me? A. spread B. dip C. grade D. whish 4. We should do something to protect water from being polluted ..... we will have nothing to drink in the future. A. unless B. whether C. if D. or 5. Can I have a pizza dozeneggs and a......of lemonade, please? A. tub B. jar C. bottle D. piece 6. You usually......vegetables like onion. It ,eans that you cut them in to many small pieces. A. whisk B. sprinkle C. grate D. chop