— When did you last hear ______ Jay?— He phoned me this morning, and we agreed ______ a time and place to meet.
button
advise
fever
realize
tough
I want to ________ a question to the chairman but in a moment I lost my nerve.
The problem ________ this material can be used in our factory has been solved.
The first thing ________ I did was to see if there were any products ________ might help me, but there only seemed to be powders ________ to kill snakes.
________ is very important in doing any scientific work.