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1.have
2.has
3.don't have/camping
1.an/a/the
2.a/a
3.an/the/a
4,a/a
1 Lan goes to the supermarket on foot
2 Our garden has many flowers
3 He has black hair
4 We don't have to finish the task today (not necessary => don't have to: không cần làm gì, còn must not là không được làm gì nên câu này đề cho must là sai)
5 Are there 23 students in your class?
6 Lan is not as young as Minh
\(a)x=9/20-(-13/24)=>x=9/20+13/24=119/120\)
\(b)x=-2/5-13/15=-19/15\)
\(c)-x=-1/8+1/12=-1/24=>x=1/24\)
\(d)-4/9-x=5/36=>x=-4/9-5/36=-7/12\)
a.\(\Leftrightarrow x=\dfrac{9}{20}+\dfrac{13}{24}\Leftrightarrow x=\dfrac{119}{120}\)
b.\(\Leftrightarrow x=-\dfrac{2}{5}-\dfrac{13}{15}\Leftrightarrow x=\dfrac{-19}{15}\)
c.\(\Leftrightarrow-x=-\dfrac{1}{8}+\dfrac{1}{12}\Leftrightarrow-x=-\dfrac{1}{24}\Leftrightarrow x=\dfrac{1}{24}\)
d.\(\Leftrightarrow-x=\dfrac{5}{36}+\dfrac{4}{9}\Leftrightarrow x=-\dfrac{7}{12}\)
\(e.\Leftrightarrow\dfrac{x}{4}=\dfrac{31}{140}+\dfrac{3}{7}-\dfrac{2}{5}\Leftrightarrow\dfrac{x}{4}=\dfrac{1}{4}\Leftrightarrow x=1\)
f.\(ĐK:x\ne0\)
\(\Leftrightarrow\dfrac{5}{x}=\dfrac{1}{2}-\dfrac{5}{12}+\dfrac{1}{8}\Leftrightarrow\dfrac{5}{x}=\dfrac{5}{24}\Leftrightarrow x=24\left(tm\right)\)
g.\(\Leftrightarrow x=\dfrac{11}{10}-\dfrac{1}{9}\Leftrightarrow x=\dfrac{89}{90}\)
h.\(\Leftrightarrow\dfrac{5-x}{12}=\dfrac{3}{8}-\dfrac{7}{24}\Leftrightarrow\dfrac{5-x}{12}=\dfrac{1}{12}\Leftrightarrow5-x=1\Leftrightarrow x=4\)
I.
1.B
2.A
3.D
4.C
II.
1.A
2.C
3.B
4.D
5.C
6.B
7.B
8.D
III.
1. feels
2. is playing
3. didn't ride
4. to eat
IV.
1.a
2.c
3.d
4.b
1 D
1 are
2 bought
3 are watching
4 gave
5 will go
6 told
7 is weraing
8 watching
9 goes
10 will visit
1 D
2 B
3 A
4 D
1 B
2 D
3 B
4 C
How about jogging after meal ?