10) She usually walks to work but today she goes by taxi because she is late.
11)What are you thinking at present?You look worried.
12)His sister drinks some water because she is thirsty.
13)Ron doesn't want to buy that watch, because he doesn't have enough money.
14)They always wear uniforms but this week they wear casual dresses.
15)athe students don't understand what their teacher is explaining right now
16)Sandra works as an academician at a university
17)Sandra works on an academic project currently.
18)What is your mother cooking? It smells so nice
19)My uncle lives in Poland. I write to him once a month
20)Mr. Pinter never spend his money on unnecessary things, he prefers to save it
