Those black clouds are a sure _____ that it’s going to rain. 

As a candidate, you must make a good _______ on everyone you meet if you want to win the election.

 At the meeting they discussed three different ____ to the study of English grammar.

Our school sports meeting we had looked forward to______ in _______ fine weather, which was beyond our expectation.

 My teacher’s words had a great _____ my studying science at college.