1.Nowadays it is difficult for people to find ____ work everywhere because __________economic situation is very serious.
A. 不填; an B. a; the C. 不填; the D. a; 不填
2. The stronger the ________, the more quickly a person will learn a foreign language.
A．attention B．tendency C．motivation D．excitement
3. More teens are smoking in Beijing, ______ the number of primary and middle school students picking up the habit has more than doubled from previous years.
A. which B. when C. where D. that
