Bài tập về thì hiện tại hoàn thành và thì quá khứ đơn
1) I ..... my Maths homework yesterday ( to do )
2) .... Susan ....... to England by plane ? ( to go )
3) They ......... a farm two weeks ago . ( to visit )
4) Jenny and Peggy ... their brother. ( not / to help )
5) The children ........ at home last weekend . ( not / to be )
6) When ...... you ..... this wonderful skirt ? ( to design )
7) My mother ........ into the van . ( not / to crash )
8) The boys ....... the mudguards of their bicycles ( to take off )
9) ....... you ......... your aunt last week ? ( to phone )
10 ) He .......... milk at school . ( not / to drink )