President Xi Jinping _____ visited thenavy troops and urged to strengthen naval force on April 9, 2013

The new invention made ____________ possible for a blind man to read.

When the reached the top of the hill, they _____ so they had to stop for a rest.

1 Suddenly he caught ________sight of aman who went into the telephone booth to make ________ call

The smoggy weather has made us realizeterribleproblems we are laced with．