Rainbows ________ when sunlight passes through small drops of water in the sky.
A. |
produce |
B. |
produced |
C. |
are produced |
D. |
were produced |
Rainbows ________ when sunlight passes through small drops of water in the sky.
A. |
produce |
B. |
produced |
C. |
are produced |
D. |
were produced |