单项选择题
A.invented B.discovered C.found D.developed
It was in（）the American astronauts succeeded in landing...
单项选择题It was in（）the American astronauts succeeded in landing on the moon.
A.when B.the moment C.which D.that
It was a great pleasure（）me to be invited to the party....
单项选择题It was a great pleasure（）me to be invited to the party.
A.for B.on C.to D.of
It is not always easy to tell the right（）the wrong.A.fr...
单项选择题It is not always easy to tell the right（）the wrong.
A.from B.with C.than D.to
