... 27 We suggested(A) avoid (B)walking(C) in the rain(D) 28 We can reduce(A) garbage (B)by reuse and recycle (C)bottles and cans(D) 29 Burn (A)trash (B)will pollute(C) ... computers First, there are programs for (31) …….math problems Second, there are programs for ( 32) ……studies Third, some programs are like fancy typewriters They are often used by (33) …….and business ... Sometimes they seem happy, sometimes they seem (40)…… It is easy to think they are like people 31 A doing B working C writing D making 32 A normal B scientific C lower D training 33 A workers B farmers...