choose the best answer.
1. as the drug took _______ the patient became quicker.
a. force b. influence c. action d. effect
2. either you or your friend _________ on charge today.
a. are b. is c. was d. were
3. this is not the right ________ to ask for my help: i am far too busy even to listen!
a. moment b. situation c. opportunity d. circumstances
làm và gt hộ e ạ