Complete the paragraph given below by filling in the blanks with the help of options that follow :
The butter (a) ................ melted. Onions and vegetables are (b) .................. in it for 3 minutes. Flour and stock are added. It is (c) ................ to a boil while (d) .................. continuously.
(a) (i) be (ii) is (iii) are (iv) being
(b) (i) fried (ii) fry (iii) fries (iv) frying
(c) (i) bring (ii) brought (iii) bringing (iv) brings
(d) (i) stir (ii) stirring (iii) stirs (iv) stirred
