Cho △ABC tia phân giác của \(\widehat{B}\) và \(\widehat{C}\) cắt nhau tại O

a)Chứng minh OA là tia phân giác \(\widehat{A}\)

b)Tính \(\widehat{BOC}\) biết \(\widehat{A}\)=\(7^0\).

1. By the time I (arrive) _____ home my family (take) _______ to the shelter without me.

2. Since the last mudslide, no one (see) _____ Jim again.

3. For the last five day, the baby (keep) ______ in the public shelter to protect from (affect) ________ by the aftershock.

1. Many believe only animals ( endanger) __________.

2. What(you/do) _____________- when the fire (occur)_________?

3. In the news last night, the injured people (report) __________to have recovered quickly from the earthquake.

4.The machine (use) _______________ to measure the magnitude of earthquakes.

5. The evacuation (complete) ___________ 3 hours before the storm (hit) ___________ the village.

6. Not much (say) ___________ about the accident since then.

Use the words in the box: rescue; collapse; accommodate; injure; erupt; mass

1.The explosion made a ........ hole in the ground.

2. After two days being trapped in debris, they were luckily........ by helicopter.

3. His ......... leg prevented him from walking.

4. The family is staying in temporary......... until their house is rebuilt.

find the mistakes in these sentences and correct them:

4.the bus to the museum will leave at 9.00 every day=>...

5.Chinese people have depended on the lunar calendar to prepare for their New Year Eve.=>

find the mistakes in these sentences and correct them: we are all look forward to our family reunion at Chrismas=>

2.His soft skills improve a lot since his trip to Canada=>