The study had some important limitations. It was a pilot study and ( ) a placebo control.
A: lacked
B: missed
C: lost
D: neglected
A: lacked
B: missed
C: lost
D: neglected
举一反三
- Having missed so many lessons, Tom had to study harder than others, ______?
- It seemed that the girl ____. A: had lost important something B: had lost something important C: lost important things D: lost something important
- He was in such a hurry that he _____ his breakfast. A: had B: massed C: missed D: , lacked
- If I had time, I ____French. A: will study B: would study C: shall study D: would have stuied
- ()How long __________ you __________ in the United States? A: have; study B: had; studied C: have; studied D: had; study