One of the most important questions they had to consider was ______ of public health.
A．what B．this C．which D．that
You'd better not ring me up between 9 and 10. I________ an important meeting then” Dr. Lee said.
A．have B．had C．was having D．will be having
If Joe' s wife goes to the party, _______.
A．so does he B．so will he C．he will either D．either he does
thecity’spublicschoolsystemshouldbeopentothechildrenofmigrantworkershas become the focus of discussion.
A．That B．If C．What D．Whether
Don’tletthesadnessofyourpastandthefearofyourfuture ___ thehappinessofyour present.
A．to ruin B．ruin C．ruining D．ruined
— I’m sure Andrew will win the first prize in the final.
— I think so. He ______ for it for months.
A．is preparing B．was preparing
C．had been preparing D．has been preparing
