________ is known to us all that the sun rises in the east.
Only in this way to make improvement in the operating system.
So difficult it to live in an Englishspeaking country that I was determined to learn English.
The final examination is coming up soon.It's time for us to our studies.
Maybe you have been to many countries,but nowhere else such a beautiful palace.
—How often do you eat out?— ,but usually once a week.