Is this the farm () you visited last week

单项选择题—I haven’t got the reference book yet, but I’ll have a test on the subject next month.<br> —Don’t worry. You () have it by Friday.

A. could
B. shall
C. must
D. may

单项选择题The experiment shows that proper amounts of exercise, if () regularly, can improve our health.

A. being carried out
B. carrying out
C. carried out
D. to carry out