I think the coffee beans are from Brazil， ________ I'm not completely sure．（ ）
A．becauseB．sinceC．thoughD．whether
With the development of science and technology，robot cooks ______ in our families in the future．（ ）
A．appearB．appeared
C．will appearD．is appearing
It rained ______ and lasted for a long time yesterday．
Too bad!Even some streets were full of water．（ ）
A．hardlyB．stronglyC．terribleD．heavily
If you always ______ yourself with others，you may have tons of pressure．
I agree，we should believe in ourselves．（ ）
A．compareB．complainC．connectD．consider
It is accepted by everyone that knowledge is the most valuable _______ for human beings．（ ）
A．standardB．treasure
C．inventionD．instruction
I'm a little hungry，Mum!
There are some apple pies on the table，you may take ______．（ ）
A．itB．thisC．thatD．one