The Premier says that bilateral relation
题型：选择题
问题：
The Premier says that bilateral relations will grow smoothly and steadily _____ both countries follow the principle contained in the joint documents.
A．as far as
B．though
C．unless
D．as long as
The Premier says that bilateral relations will grow smoothly and steadily _____ both countries follow the principle contained in the joint documents.
A．as far as
B．though
C．unless
D．as long as