21. I don’t suppose he is ______ to come to our help when we get into trouble.
A. probable B. maybe C. possible D. likely
22. His red face suggested he _____ angry and I suggested that he_____ at once.
A. be, left B. should be, should leave C. was, left D. was, leave
23. Smoking does great harm to our health. _______ is smoking allowed in public places.
A. At no time B. In no time C. At a time D. At all times
