MANY GRASSHOPPERS CAN PRODUCE SOUNDS BY ………. THEIR HIND LEGSAGAIN...

190. - 2000 TEST EXAM WITH A AND B DOCX
2000 TEST EXAM WITH A AND B DOCX

190. Many grasshoppers can produce sounds by ………. their hind legs

against their wings.

a. rub

b. to rub

c. rubbed

d. rubbing

d