Energy projects have been built in over ______ countries since the proposal of BRI.（ ）
A: 20
B: 10
C: 30
D: 40
A: 20
B: 10
C: 30
D: 40
举一反三
- Energy projects have been built in over ______ countries since the proposal of BRI.
- Despite those memories, the two countries have forged a new relationship built on _______ over the past 10 years, since _______.
- More than 40 countries in Asia have joined the BRI.
- What have been built in London since the 20th century?
- A lot of buildings ______ and the place ______ very noisy ever since we moved here. A: have been built; has become B: have been built; became C: were built; has become D: were built; became