Chủ đề:
Violympic toán 9Câu hỏi:
biết 720 = 24.32.5; 1512 = 23.3.5.7 . bội chung nhỏ nhất của ba số 720; 1512 và 420 là
A) 24.33.5.7
B) 22.32.5.7
C) 23.33.5.7
D) 29.36.52.72
1. I just (finish) ....................... my homework
2. My report just (finish)...........................
3. Everyday the streets (clean)..........by these cleaner
4.The cleaner (sweep)................... the streets everyday
5. We (meet) ...........Nam at the airpot last night
6. Nam (meet) ................ at the bus station by his friend 2 days ago
7. They ( build) .............. a new bridge across this river now
8. Now two new parks ( come)............................ to my house yesterday, my bicycle (repair)...................... by me
10. Yesterday when he (arrive)................, We (eat)............. dinner