By the end of this year Mr. Smith_______in our company for exactly three years.
A. is working
B. has worked
C. will work
D. will have work
查看答案
l think that the Great Wall is worthhundreds of miles to visit.
A. to travel
B. traveling
C. traveled
D. travel
The new staff didn't know how to use the system ________l explained it to him yesterday.
A. until
B. because
C. if
D. since
The first question we now discuss is _______ we should go there early tomorrow.
A. whether
B. where
C. what
D. whom
The auto industry spends large amounts of money on marketing compaigns young adult customers.
A. attract
B. attracted
C. to atrract
D. attracts