Tony is very disappointed （） the results of the exam.

单项选择题Being a pop star can be quite a hard life, with a lot of travelling （） heavy schedules.

A．with regard to
B．as to
C．in relation to
D．owing to

单项选择题Although they plant trees in this area every year, the tops of some hills are still （）.

A．blank
B．hollow
C．vacant
D．bare