Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
The policeman explained to us ________ get to the market.
A.how we could
B.how could we
C.how could
D.how

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
The president has already instructed our branch manager in New York ______ annual sales figures by the end of December
A.to report
B.reports
C.reported
D.reporting

Mark the letter A,B,C,orD on your answer sheet to indicate the correct answer to each of the following questions.
My mother advised me ______ an apple every day to stay healthy.
A.ate
B.to eat
C.eat
D.eating

Choose the best answer for the following questions
I’m sorry but I didn’t mean _______you.
 
A.to upset
B.upsets
C.upsetting
D.upset

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
If you have something important _____, you’d better say it aloud rather than whispering to each other.
A.to saying
B.saying
C.to say
D.say

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
" Who wrote this poem?" - " It's said ___________ written by one of the Bronte sisters."
A.to being
B.to have been
C.to having been
D.to be

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
Drying flowers is the best way ________ them.
A.preserved
B.preserve
C.by preserving
D.to preserve

Cho $\int\limits_a^b {f\left( x \right)d{\rm{x}}} = 2,\int\limits_b^c {f\left( x \right)d{\rm{x}}} = - 5,a < b < c$, thì \(\int\limits_a^c {f\left( x \right)d{\rm{x}}} \) có giá trị bằng:
A.$3$
B.$7$
C.$-3$
D.Không xác định được

Chọn khẳng định đúng trong các khẳng định sau:
A.Nếu $f\left( x \right)$ liên tục và $f\left( x \right)\ge 0$ trên $\left[ a;b \right]$ thì $\int\limits_{a}^{b}{f\left( x \right)d\text{x}}\ge 0$
B.Nếu $f\left( x \right)$ đồng biến trên $\left[ a;b \right]$ thì $\int\limits_{a}^{b}{f\left( x \right)d\text{x}}\ge 0$
C.$\int\limits_{-a}^{a}{d\text{x}}=0$
D.Nếu $\int\limits_{0}^{a}{f\left( x \right)d\text{x}}=0$ thì $f\left( x \right)$ là hàm số lẻ

Cho hàm số $y=f\left( x \right)$ có đạo hàm trên \(\mathbb{R}\) và $f\left( 0 \right)=3;f\left( 3 \right)=1$ . Khi đó, $I=\int\limits_{0}^{3}{f'\left( x \right)d\text{x}}$ bằng
A.$2$
B.\(3\)
C.$-2$
D.\(4\)