khoanh vào đáp án đúng
1. I.............. an exercise on the present teses this moment
a. am doing b. are doing c. do d. does
2. my mother sometimes...................... vegatables this market
a. buy b. are buying c. is buying d. buys
3. it..................... very cold now
a. is b. are c. is being d. am
4. it.................. much in summer. it.......................... now
a. rain/ is raining b. rains/ are raining c. rains/ raining d. rainning/ raining
5. Daisy............................... some food in the kitchen at present. She always....................... in the morning
a. cook/ is cooking b. cooks/ are cooking c. cooks/cooking d.is cooking/ cooks