Chen Wei isn't at school today ________ he is taking a robot competition in Shanghai．（ ）
| A． |
so |
B． |
because |
C． |
before |
D． |
if |
I can't find the magazine I bought this morning．
Well，Jack is reading _____over there．Why not go and see if it is yours？（ ）
A．itB．thatC．oneD．some
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