Cho dạng đúng của động từ trong ngoặc:
1, His knowledge(develop)____since he(get)_____habit of(read)_____
2, This is the worst storm I(ever have)_____
3, I(receive)______twenty cards so far
4, Nga is busy with(do)_____her homework
5, They(work)_____in the library when the alarm(go)_____off
Cho dạng đúng của động từ trong ngoặc:
1, His knowledge(develop)__has developed __since he(get)__got ___habit of(read)__reading ___
2, This is the worst storm I(ever have)__have ever had ___
3, I(receive)___have received ___twenty cards so far
4, Nga is busy with(do)__doing ___her homework
5, They(work)__were working ___in the library when the alarm (go)__went ___off