________, Henry studied even harder after he entered the university.
In South-East Asia, many farmers cannot afford _____ farm equipment such as tractors, so most of the work is done with human labour.
The first thing you must remember is that in order to succeed, it is almost compulsory that you ______ optimistic.
John can finish this task quickly ______ using better methods.
It may be necessary to stop _____ in the learning process and go back to the difficult points in the lessons.
The driver stopped his car so _____ that he was hit by the cab right behind him.