4/ Look at those clouds! There's a storm _______.

A. threat B. threaten C. threatening D. threateningly

5/ It was a long and _______ battle and many men were killed.

A. blood B. bloody C. bleed D. bleeding

6/ I hope they'll have the good _______ to shut the windows before they leave.

A. sense B. sensitive C. sensible D. senseless

7/ The story is set in an _______ world.

A. image B. imagine C. imaginative D. imaginary

8/ The program traced the _______ of popular music through the ages.

A. develop B. developed C. developing D. development

9/ The firm produces kits for amateur car _______.

A. construct B. constructors C. constructive D. construction

10/ Most zoos try to exhibit animals in _______ settings.

A. nature B. natural C. naturalize D. naturalistic

16/ One way of preventing further flooding would be to _______ the river bed.
A. deep B. deepen C. deeper D. depth
17/ It is important to educate children before they become sexually _______.
A. act B. active C. action D. actor
19/ Now you know all the facts, you can make an informed _______.
A. choice B. choose C. chooser D. choosing
20/ The company's new model will be going into _______ early next year.
A. produce B. producer C. products D. production
21/ You _______ change trains at Peterborough if you're going to Newcastle.
A. could B. should C. did D. would
22/ You _______ have a piece of cake after you've eaten your vegetables!
A. can B. could C. shall D. might
23/ If you show the receipt, there _______ to be any difficulty getting your money back.
A. shouldn’t B. couldn’t C. didn’t D. oughtn't
24/ They knew there _______ be trouble unless the report was finished by the next day.
A. ought to B. should C. would D. must
29/ There are, _______ you don't mind me saying so, one or two problems with this plan.
A. if B. provided C. in case D. as long as

cho biết b chia hết cho a,tìm UWCLN(a,b) . Cho ví dụ

Giải các bất pt sau

a. \(\sqrt{3-x}+\sqrt{x-5}\ge-10\)

b. \(\frac{\left(x-2\right)\sqrt{x-1}}{\sqrt{x-1}}< 2\)

c. \(\frac{x+2}{3}-x+1>x+3\)

d. \(\frac{3x+5}{2}-1\le\frac{x+2}{3}+x\)

Giải giúp em với ạ

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