1 feel that one of my main duties ______ a teacher is to help the students to become better learners.
I felt surprised that anyone of his intelligence ________ such an easy test.
We ________ take clean drinking water for granted. One day we may run out of it.
Parents are doing all they ________ to help their children achieve their ambitions.
________ for the fact that she broke her leg, she might have passed the exam.
His pale face suggested he ________ angry and I suggested that he ________ at once.