ProfessorJohnsonissaid_____somesignificantadvanceinhisresearchinthepastyears.

Mymotherwasdeterminedtohelpthoseinneedandshewouldhavebeenimmenselyproudofwhathasbeenachievedtheselast20years.Theitalicizedpartinthesentenceexpresses_______.

_____ their help, we would not have succeeded.

There are only ten apples left in the baskets, _____ the spoilt ones.

You____that letter to James. However ， you didn't.