1、【题目】________(fail)severaltimes,theyneedsomeencouragement.

答案：

解析：

1、【题目】The director recommended that she ________ (study) more English before going abroad.

答案：

study

解析：

暂无解析

1、【题目】________(catch)intherain,hewaswettotheskin.

答案：

解析：

1、【题目】he teacher told them since light ________ (travel) faster than sound,lightning ________ (appear) to go before thunder.

答案：

travels, appears

解析：

暂无解析

1、【题目】heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.

答案：

解析：

1、【题目】He refused to tell us whether he ________ (undertake) the job.

答案：

would undertake

解析：

暂无解析