2.Circle the correct word:
1. I maked/ made a cake for my son.
2. We had/ haved a big house near the bridge.
3. They buyed/ bought a new car.
4. I taught/ thought last year.
5. Susan drunk/ drank a cup of coffee.
6. She loosed/ lost her key yesterday.
7. My father feed/ fed the dog.
8. We goed/ went to the cinema last Sunday.
9. She win/ won a gold medal.
10. My mother see/ saw her best friend at the café.
11. He done/ did her homework.
12. I studied/ studies hard for my English...
Đọc tiếp
2.Circle the correct word:
1. I maked/ made a cake for my son.
2. We had/ haved a big house near the bridge.
3. They buyed/ bought a new car.
4. I taught/ thought last year.
5. Susan drunk/ drank a cup of coffee.
6. She loosed/ lost her key yesterday.
7. My father feed/ fed the dog.
8. We goed/ went to the cinema last Sunday.
9. She win/ won a gold medal.
10. My mother see/ saw her best friend at the café.
11. He done/ did her homework.
12. I studied/ studies hard for my English exam.
13. They help/ helped the old man to cross the street yesterday.
14. Lora looked/ look at the man carefully.
15. Sarah washes/ washed her hair two days ago.
d: A={11;12;13;14;15;16;17;18;19;20}
A={x\(\in\)N|11<=x<=20}
Số phần tử của tập hợp A là 20-11+1=20-10=10(phần tử)
e: D={10;11;12;13;14;15}
D={x\(\in\)N|9<x<=15}
D có 15-10+1=5+1=6 phần tử
f: F={1;2;3;...;30}
F={x\(\in Z^+\)|x<=30}
Số phần tử của tập hợp F là 30-1+1=30(phần tử)
g: G={x\(\in\)N|x>5}
G={6;7;8;...}
G có vô số phần tử
h: C={18;19;...;100}
C={x\(\in\)N|18<=x<=100}
Số phần tử của tập hợp C là 100-18+1=83(phần tử)
i: B={102;105;...;999}
B={x\(\in\)N|100<=x<=999;x\(⋮\)3}
Số phần tử của tập hợp B là \(\left(999-102\right):3+1=300\)(phần tử)