问题
选择题
___ the red switch on the left and the flying machine will swiftly go up into the air and ____its journey. [ ]
A. Pressing; begins
B. Press; begin
C. Pressed; begins
D. To press; to begin
答案
答案:B
___ the red switch on the left and the flying machine will swiftly go up into the air and ____its journey. [ ]
A. Pressing; begins
B. Press; begin
C. Pressed; begins
D. To press; to begin
答案:B