Ⅰ.单项填空
1．________her home，Mary helps her mother with some housework.
A．As soon as she returns B．On arriving
C．After she gets D．Instantly she reaches
2．This beer isn’t bad；I’m beginning to________a taste for it.
A．acquire B．achieve
C．obtain D．attain
3．Most people said that pay was their main________for working.
A．attention B．tendency
C．motivation D．excitement
4．Many students’ failures________their carelessness in every examination.
A．lie in B．get in
C．take in D．turn in
