On the surface of the water________, which spoiled the beautiful scenery of the park.

So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ______. width=”117″ valign=”top” style=”width:87.6pt;padding:0cm .5pt 0cm .5pt”

The campers ____ the tent first, and built the fire outside it. [ ]

How times flies! Ten years ______ passed.

If I the driving test, I will have an another try.