Direction: Choose the correct form of the verb that is in agreement with the subject:
At the end of the tube there ______ two lenses: one which gathers light and the other which magnifies the image.
1
have been
2
is
3
are
4
are being
Direction: Choose the correct form of the verb that is in agreement with the subject:
At the end of the tube there ______ two lenses: one which gathers light and the other which magnifies the image.