1. All of the flowers now raised here have developed from those _______ in the forest. A. once they grew B. they grew once C. they once grew D. once grew 2. In the office I never seem to have time until after 5:30 pm, _____ many people have gone home. A. that B. which C. whose time D. by which time 3. Is this the reason _______ at the meeting for his carelessness in his work? A. he explained B. what he explained C. how he explained D. why he explained 4. Luckily, wed brought a road map without ______ we would have lost our way. A. it B. that C. this D. which 5. When he was working there he caught a serious illness from _____ efforts he still suffers.A. which B. that C. whose D. what 6. Its said that hes looking for a new job, one ______ he can get more money to support his family. A. when B. where C. that D. which