석세스토익

1. Practical Grammar Test 1. To maintain contact (A)with that is (B)happening on the production floor, a company president (C)must occasionally visit the floor and speak with the workers (D)directly. 2. People (A)who lend books (B)from the Library and do not (C)return them when they are due are not (D)showing consideration for other Library users. 3. The new jet engine (A)proved to be powerful yet so fuel efficient (B)while it should help airlines turn a profit (C)even in (D)highly competitive markets. 4. The car`s battery (A)would not (B)take a charge (C)but it was (D)low on water. 5. The postal service (A)has given a great deal of personnel (B)turmoil in recent years, (C)giving rise to many on-the-job (D)incidents of violence.