Cho Sin an pha = \(\dfrac{7}{25}\) . Tính cos an pha, cot an pha

1, cho tam giác ABC vuông tại A, góc B= 30 độ

Tính SinB, cosB, tanB , cotB

1, If had follow your advice, I........happier now

a, am b, should be c, will have been d, have been

2, If I.......more time, I should take up golf as a hobby

a, have b, had c, has

3, If he..............here now , we would ask his opinion

a, is b, were c, has been d, had been

4, If I ..........the chance , I would have trained to be a dortor

a, would had b, would have c, have had d, had had

5, If I were you ...........phone and tell her you're going to be late

a, I'd b, I'lll c, I'd have d, I

6, If I ..........convenient , lets it go out for a drink tonight

a, be b, is c, was d, were

7, If you ......time, please write to me

a, have b, had c, have had d, has

8, If it .........tomorrow, we may postpone going on a picnic

a, will rain b, rains c, shall rain d, raining

9, If you hadn't watched that late mivie last night , you ..........sleepy now

a, wouldn't have been b, wouldn't be c, might have not been d, wouldn't have been being

10, If you...........as I told you, you ............sorry now

a, did/would b, had done/had not been c, do /would not be d, had done/would not be

11, If only I .............him now

a, see b, saw c, have seen d, seen

1. we do not visit the museum because we have no time

A. If we have time, we will visit the museum B. if we had time, we would visit the museum

C. if we had time, we would have visited the museum D. if we had time, we will have visited the museum

2. ..........i have time, I will go with you

a. if B. unless C. so D. so that

3. If i .........who took your umberella, I would tell you

A. know B. knew C . known D. had know

4. If the automobile had not been in invented years ago,.......for basic transporttation now

a. what we would use b,what would we use c, what we will have used d, what we will be using

5, if the police had not saved me, i ..........at that time

a. will die b. would die c, will have died d, would have died

6. if i had time, i........and help you

a. will come b, would come c, will have come d, would have come

7, if I ......the truth, i would tell you

a, will know b, know c, hvae known d, knew

8, I'll return Bob' pen to him the next time if I .....him

a, will see b, see c, will have see d, have seen

9. I' d have told you if I .......the book

a, would have been b, should have seen c, had seen d,saw

10, If I..............more time , I would not have said such nonsense

a, am b, have been c, will be d,had been