37. In spite of being many energy-saving products, people don't want to use them.

- in spite of + N/Ving = Although + S + V 

38. It's time you looked better care of yourself.

- It's time + S + V2/ed : đã đến lúc ai đó phải làm gì

39. Jane suggested that Rob should come over there and help pick up the trash.

- S1 + suggest + that + S2 + should Vinf: gợi ý 

40. The laboratory where the students are working with lot of chemicals.

- where thay cho nơi chốn

37.in spite of being many energy-saving peoducts,people don't....-in spite of+Ving/noun phrase/the fact that+1 mệnh đề,....S+V

38.it is time you looked after yourself-take care=look after

39.Jane suggest Rob that he should come over there and helped pick up the trash

40.the laboratory in which the students are working with ....-câu mệnh đề quan hệ