1. Our hen ______ for nearly 10 days, so we have no eggs in our fridge now.
A. did not lay B. has not laid C. have not lain D. has not lay
2. More than 40 patterns on silicon surfaces _______ with that paintbrush so far.
A. printed B. were printed C. have printed D. have been printed
3. This method seems to be _______ . A lot of students who follow it can improve their pronunciation quickly.
A. use B. useful C. useless D. misused
1. Our hen ______ for nearly 10 days, so we have no eggs in our fridge now.
A. did not lay B. has not laid C. have not lain D. has not lay
2. More than 40 patterns on silicon surfaces _______ with that paintbrush so far.
A. printed B. were printed C. have printed D. have been printed
3. This method seems to be _______ . A lot of students who follow it can improve their pronunciation quickly.
A. use B. useful C. useless D. misused