1.Mary isn't here at the moment . She ____ later .
A.comes B.came C.has come D.is coming
2.How kind you are ! You always do what you can ____ me.
A.help B.helping C.to help D.helps
3.——We're doing a lot to protect our environment,but it is not good enough.
——So we should try ____ to look after it.
A.hard B.harder C.hardest D.hardly
D be doing表示将来时
C You always do( what you can) ____ me 表目的 括号里是名词性从句
B有比较的意思 hard作副词的比较级
第二题答案说是选C呀