New research has begun to address this _______.
A: enigma
B: encounte
C: pottery
D: encouragement
A: enigma
B: encounte
C: pottery
D: encouragement
举一反三
- Work has been begun on the (construct) _____ of the new airport.
- Online learning, a fresh new idea, has begun to be accepted by the public in UK.
- The film _______ for half an hour. A: has begun B: has been begun C: has been on D: began
- By the early 1980s, however, nearly two decades ________ since the changes in family life ________. A: . had passed … had begun B: . has passed … had begun C: . had passed … has begun D: . has passed … has begun
- The by the time I got there meeting ___ yesterday. A: was on B: has been on C: had begun D: has begun