Giúp mình 4 câu với. 1. It is considered rude for participants to _______ while the chairman is delivering a speech. A. put in B. cut in C. cut down D. bring in 2. Peter has _______ strange hobbies like collecting bottle tops and inventing secret codes. A. gone on B. taken up C. gone with D. taken off 3. The fire must have _______ after the staff had gone home. A. broken down B. broken up C. broken out D. broken off 4. When they had finished playing, the children were made to _____all the toys they had taken out. A. put off B. put out C. put up D. put away