Do you think children 's games should be..... (ducate)
........have been working Hard in the search for a cure for cancer (science)
Threre is now no...... That she Will make a full recovery (possible)
They have held the.... For the past two years (champoin)
Diet plays an important role in the........ Of heart disease(manage)
He cycled ......and had an accident (care)
Do you know what the...... Of this river? (deep)
I really don't think he has the..... to do this iob(able)
He has worked well and produce some ......essays(interest)
Is this...... from easy to complete (apply)
Tim loi sai Va sua lai
The teacher ordered us not open our unil she told us to do so
He is angry about having not been invited us to her birthday
Jonhn Was upset last night because he had to do too many homework
We wish we have a longer vacation but we don't
He doesn't have any information about the departure and arrival time of today 'S flights
I wish I didn't go there for my holiday last year. I didn't enjoy it
I will ask someone to make a new dress
=)I will have.....
The bridge might be built in a hurry
=>people.....
You really should be able to dress yourself by now
=>it is high time .......
I wish I hadn't told him what we were planning to do that evening
=>I regret ........
They once started these machines by hand
They use to
Đặt vật sáng ab vuông góc vs trục chính của thấu kính hội tụ, A nằm trên trục chính và ở ngoài tiêu cự
A, hãy dựng ảnh và neu đặc điểm của ảnh a'b'
B, gọi d=oa là khoảng cách từ vật đến thấu kính, d' =oa'la khoảng cách từ ảnh đến thấu kính, f là tieu cự. Hãy chứng minh :1/f=1/d+1/d' và a'b' =d'/d*ab