I often busy.... weekdays and free.... the weekend.
A.at / for
B.in / on
C.during / within
D.on / at

Farming now use (A) 10 percent (B) of the earth’s (C) land area to produce (D) food.
A.to produce
B.percent
C.use
D.earth’s

In the past, some of the most highly (A) stressed areas in (B) education was (C) the moral improvement of students.(D)
A.was
B.highly
C.in
D.students

The natural conditions (A) in the US which most (B) affecting (C) manufacturers are (D) factory power and labor supply.
A.affecting
B.most
C.natural conditions
D.are

The result of (A) the studies have had (B) a strong (C) impact on (D) future developments
A.have had
B.of
C.strong
D.on

The result of the evaluations (A) and recommendations show (B) that more effort (C) needs to go into research. (D)
A.evaluations
B.show
C.more effort
D.into research

Not only the students but also their instructor.... to the principal’s office.
A.have been called
B.has been called
C.call
D.is calling

Michael, along with his brothers and support team,.... many major cities around the world every year.
A.are visiting
B.is visiting
C.visit
D.visits

Kara, together with her teammates, .... hands with opponents on the basketball court.
A.have shaken
B.shake
C.is shaking
D.are shaking

Peter, as well as my two brothers, .... football in the school yard every afternoon.
A.often plays
B.often play
C.often played
D.plays often