_____ he tried his best, he failed at last.
A. Yet B. But C. Though D. However
Mark is telling his parents _____ he saw on the way home just now.
A. which B. where C. what D. Why
She has some trouble _____ out the math problem.
A. work B. to work C. working D. Works
You have to adapt_____ the new environment when you go to a new place.
A. with B. to C. for D. On
I want to know _____.
A. who will you go there with B. who will you go there
C. who you will to there D. who you will go there with
Both Mark and Jim _____ very hard. They are top students.
A. studied B. studies
C. study D. to study
