I'll have an important meeting this weekend，so I can't go fishing with you．
___________．I thought we could have a nice time together．（ ）
A．It's a pleasureB．You're welcome
C．What a pityD．I am sure
Although he was _____my opinion，the old professor didn't come up with his own．（ ）
A．againstB．onC．forD．in
Father's Day is coming，Shall we make a card for Dad？
Good idea！But would you show me _____ because I only know little about DIY？（ ）
A．whyB．whenC．howD．where
Sam is ____about his speech because he thinks he is well prepared．（ ）
A．honestB．confidentC．modestD．curious
We've got everything ready for the picnic．
Do you mean I ______bring anything with me？（ ）
A．can'tB．mustn'tC．couldn'tD．needn't
Could you help me with housework _____you are free today？（ ）
A．sinceB．thoughC．unlessD．until