THEY SUGGEST WE ……….. SOLAR ENERGY INSTEAD OF GAS.A. USING B. TO US...

4. - DE THI HKII TIENG ANH 9 4. - DE THI HKII TIENG ANH 9
DE THI HKII TIENG ANH 9
4. They suggest we ……….. solar energy instead of gas.A. using B. to use C. will use D. should useII. Choose the correct word in brackets to combine the pairs of sentences into one.