Giải giúp em với giải thích ạ ----- Nội dung ảnh ----- IX. Fill in the blanks with the correct form of the verb in brackets. 1. My shop always (open) ______________ at 9 a.m. every day. 2. Don’t be late! The train (leave) ______________ the station at 8 a.m. tomorrow. 3. They were swimming in the ocean all day when they ______________ (see) a school of dolphins. 4. They ______________ (climb) to the top of the mountain when it started to rain heavily.
