_______ China implements (实施) its control over the disputed regions, can its sovereigntyand interests be defended.[ ]

No one knows exactly when the first peoplearrived in _______ is now called California.

下列句中加点字意义相同的一项是（ ）

The noise coming from upstairs are driving me mad.

I’d appreciate___________ifyou would liketo teach me how to use the computer.[ ]