Chủ đề:
Luyện tập tổng hợpCâu hỏi:
41/ It is necessary to understand ____ most customers have high expectations about expensive products.
a whether
b that
c what
d because
42/ ____ the company is based in Asia, most of its products are exported to countries around the world.
a When
b If
c That
d Although
43/ ____ you understand the rules and regulations in this place, you will feel a lot more comfortable.
a In case of
b So that
c Whether
d Once
44/ If you ____ personal assistance, you can directly contact the Customer Service Department.
a needs
b needed
c need
d will need